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Polychaetes (Annelids: Polychaeta) described for the Mexican Pacific: an historical review and an updated checklist/los poliquetos (Annelida: Polychaeta) descritos en el Pacifico mexicano: revision historica y lista faunistica actualizada.

INTRODUCTION

The study of polychaetes in the Mexican seas started during the second half of the nineteenth century, when Kinberg (1857) recorded the amphinomid Hermodice carunculata (Pallas, 1776). Unfortunately, he did not record the sampled site precisely, only noting "Mexico" as the sampling location. However, we consider it plausible that the amphinomid was collected in the Veracruz littorals due to the economic importance of the Veracruz Port at the time and because the records show that this species is common in the littoral grassbeds and coral reefs of the Gulf of Mexico (Johnson & Vittor, 1982). Thirty years later, Ehlers (1887) identified Spirobranchus incrassatus (Kroyer, 1863) in the Bay of Acapulco, the first record for the Mexican Pacific, but it was not until 1904 that Bush described a new species from the Mexican Pacific region: the serpulid Eupomatus humilis, a species currently valid as Hydroides humilis fide Pillai (1972).

During the following years, the study of polychaetes in the Mexican Pacific increased, mainly due to foreign oceanographic expeditions and researchers that enriched some of the world's prestigious scientific collections, particularly those of the Los Angeles County Museum of Natural History and the Allan Hancock Foundation, in Los Angeles, California. For the last 24 years, systematic studies carried out by Mexican researchers have increased considerably and shown a consistent and continuous effort in the area. Nowadays, more than 1,100 species of polychaetes have been recorded for the Mexican Pacific; however, most of these studies were done in the Gulf of California, whereas the southern coasts have been comparatively less studied (Hernandez-Alcantara, 2002).

Initial efforts to summarize the information about polychaetes from the Mexican Pacific were done by Rioja (1941b, 1947b), Salazar-Vallejo (1989a), Hernandez-Alcantara & Solis-Weiss (1999), Hernandez-Alcantara et al. (2003), and Salazar-Vallejo & Londono-Mesa (2004). These taxonomic lists are undoubtedly a highly valuable contribution to the knowledge of the polychaete fauna. However, despite this remarkable scientific effort to understand the polychaetae fauna in the region, differences in nomenclature and the criteria for taxa definitions have always been common. This is in part due to the relatively frequent revisions of genus and synonym procedures, but also because the lack of integrative taxonomic monographs and updated checklists for this region has caused confusion in nomenclature and in the real distribution ranges of many species. This study aims to present an updated list with the original and currently valid names for the polychaete species whose locus typicus is in the Mexican Pacific, to carry out an historical review, and to analyze the recorded species distributions and habitats. With this, we hope to contribute to the worldwide effort to standardize polychaete nomenclature, in this case, in the Eastern Pacific.

MATERIALS AND METHODS

The checklist for the polychaete species described from the Mexican Pacific was made following an exhaustive bibliographic review and analysis of the original descriptions. The list includes the nomenclature reference for each polychaete species (original name, year of publication, pages, figures), data for the type locality, depth and habitat (as complete as possible, based on the information in the original description), and the current valid name (citing the author who introduced the taxonomic change). In addition, the number of species for each biogeographic province is indicated. The state to which the type locality belongs is noted only in order to facilitate the search within the country since the political divisions have no biogeographic meaning.

At the end of this paper, the complete references of the consulted publications are provided. In this way, we hope to reduce the time invested when further information is needed for other specific objectives.

Mexican Pacific coasts and biogeographic provinces

The Mexican Pacific littorals cover 4,054 km and are located between 15[grados] and 32[grados]N, along the Tropic of Cancer, crossing the southern Baja California region (Fig. 1). Its water masses of different origins (arctic, subarctic, tropical, subtropical) (Wirtky, 1967) combine with the diversified physiography to create many habitats: muddy and sandy beaches, rocky shores, bays, coastal lagoons and estuaries, about 240 islands and islets of different origins and geological ages, mangroves and seagrass beds, and even active expansion centers in the bottoms of the central zones with their corresponding hydrothermal vent areas (Guaymas Basin and 21[grados]N).

The different marine regions in the Mexican Pacific are separated by steep thermal gradients to the north and south and by an area of open ocean (East Pacific Barrier) to the west. The boundaries of the biogeographic provinces used herein are taken from several authors: Briggs (1995), Hendrickx (1992), and Hastings (2000), who separated them on the basis of the distribution patterns of fishes and marine invertebrates. The northwestern littorals of Mexico are environmentally classified as warm-temperate and belong to the Californian biogeographic province which goes from south of Point Concepcion (near Santa Barbara, California) down to northern Magdalena Bay, southwest of the Baja California Peninsula (Brusca, 1980; Hastings, 2000) (Fig. 1). The topographic characteristics of the Baja California Peninsula shoreline protect it from the cold southbound California Current and help to create a warm-temperate area along the southern California coasts (Briggs, 1995).

[FIGURE 1 OMITTED]

The Tropical Eastern Region extends from the Gulf of California southward to northern Peru, where a fauna with tropical affinities dominates (Brusca,1980; Hastings, 2000). In the Mexican Pacific area, the tropical region encloses the Cortes, the Mexican, and the Panamanian biogeographic provinces. The Cortes Province corresponds to the Gulf of California, including the entire eastern and most of the southwestern coasts of the Baja California peninsula. The Gulf of California is primarily tropical in origin but could well be considered subtropical: its northernmost areas are primarily populated by eurythermal tropical species, whereas the southern fauna gradually evolves spatially to a more typical tropical biota (Brusca, 1980). The Mexican Province includes the coasts from Mazatlan (Sinaloa) down to the Isthmus of Tehuantepec in southern Mexico. At about 16[grados]N, in the northern part of the Gulf of Tehuantepec, another faunal change can be observed; the area from that point southward to the Gulf of Guayaquil (3[grados]S) is known as the Panamic Province (Briggs, 1995).

RESULTS

Taxonomic richness of polychaetes in Mexican Pacific waters

In the Mexican Pacific, the number of polychaete species recorded to date is approximately 1,100 (Hernandez-Alcantara, 2002); of these, 313 species (278 currently valid) and 21 genera have their locus typicus in the Mexican Pacific (Table 1). The serpulid Eupomatus humilis (currently valid as Hydroides humilis) (Bush, 1904) was the first species found whose locus typicus is in the Mexican Pacific. During the twentieth century, significant contributions were made to the taxonomy of Mexican polychaetes and 313 polychaete species, grouped in 162 valid genera and 41 families, were described. As our knowledge on the systematics of the group have increased, the taxonomic status has changed frequently and so, of the original 313 species described, only 278 polychaete species are valid nowadays.

Species belonging to the families Acoetidae (Polyodontes californicus) and Lopadorrhynchidae (Lopadorrhynchus parvus) have been synonymized; therefore, these families have no new species in the Mexican Pacific region. In 1969, Hartman established the family Sabellongidae for the genus Sabellonga (as monotype) and the species Sabella disjuncta, collected at 115 m in Cedros Island, Baja California. However, according to Fitzhugh (1989), Hartman interpreted the ventral lips or maybe the ventral sacs, as palps, and the species type (S. disjuncta) lacks a tentacular crown but uncini and chaetae resemble those found in Sabellidae. He then concluded that the genus Sabellonga is a member of the family Sabellidae.

The taxonomic status of 56 species has changed (Table 1), but they are still considered to be valid. For three of these species, taxonomic adjustments have been made at the family level: according to Blake (1993), Pilargis mirasetis, initially included in the family Pilargidae, belongs to the genus Santelma, in the family Nautiliniellidae established in 1993 by Blake; Flabelligella macrochaeta (Flabelligeridae) is a member of the family Acrocirridae by Light (1978); and the serpulid Hydroides glandiferum is a type of the genus Olgaharmania by Rioja (1941b) within the Serpulidae.

Considering the number of currently valid species, the Nereididae and Onuphidae are the richest families (24 species each), followed by the Polynoidae (19 species), the Serpulidae (17 species), and the Ampharetidae and Lumbrineridae (16 and 15 species, respectively) (Table 1).

For 100 species, of which 79 are valid, the habitat of their type localities was not indicated in the original description. However, the distribution of the remaining valid species on the soft bottoms of the study area shows that 65 valid species (23%) were collected on the continental shelf and 78 valid species (28%) in the deep-sea. The remaining habitats recorded include less species: 22 species on hard bottoms from the littoral and sublittoral zones, 17 species from the hydrothermal vents both at Guaymas and 21[degrees]N, and 17 species in other habitats (Table 2).

According to their locus typicus, the number of polychaete species varies in each geographic zone. In the warm-temperate Californian Province, 65 valid species have been identified; in the Cortes Province, with sub tropical conditions, the number of species is the highest (155 valid species); fnally, the Mexican Province in the southern Mexican Pacific (tropical characteristics) had 43 valid species (Table 3). Studies of the polychaete fauna distributed along the southern border of the Mexican Pacific (Panamic Province) are scarce and only four new valid species from this area have been identified.

Location of the type material of polychaetes described for the Mexican Pacific

Practically all the type material of the polychaete species collected in the Mexican Pacific has been deposited in foreign institutions, particularly in the United States National Museum (USNM); Smithsonian Institution, Washington, D.C.; the Los Angeles County Museum of Natural History, Allan Hancock Foundation (LACMAHF); and the American Museum of Natural History, New York (AMNH); but also in the Museum of Comparative Zoology, Harvard University (MCZ); the Museum National d'Histoire Naturelle, Paris (MNHN); and the British Museum of Natural History (BMNH), London. In Mexico, four official collections exist and all belong to research institutes associated with the best universities in the country. However, these collections are not a product of a national policy that recognizes the importance of this work. Two of the polychaete collections are in the Universidad Nacional Autonoma de Mexico (Mexico City); these are in the Laboratorio de Ecologia y Biodiversidad de Invertebrados Marinos, Instituto de Ciencias del Mar y Limnologia, and in the Laboratorio de Invertebrados, Facultad de Ciencias. The other collections are in the Laboratorio de Zoologia de Invertebrados no Arthropoda of the Universidad Autonoma de Nuevo Leon (Monterrey, Nuevo Leon State) and the Laboratorio de Poliquetos, Colegio de la Frontera Sur (Chetumal, Quintana Roo State).

Main contributions to the knowledge of polychaetes along the Mexican Pacific coasts

Since Bush's 1904 description of the serpulid Eupomatus humilis (now Hydroides humilis) for Mexican waters, 37 researchers have participated in describing 313 species (278 valid species) whose locus typicus is in the Mexican Pacific. Fauchald (93 species currently valid), Rioja (31 species), Hartman (24 species), and de Leon-Gonzalez with different co-authors (26 species) have made the largest contributions (Table 4).

In the beginning, polychaete studies were mainly the result of sampling done during foreign oceanographic expeditions and by researchers who visited different sites along the Mexican coasts. The expeditions of the U.S. Fish Commission Steamer Albatross (1888-1905), marked the beginning of the oceanographic and biological studies in the region. The last of these expeditions were directed by the famous naturalist Alexander Agassiz and were the most important for the study of the Mexican Pacific polychaetes. These expeditions enriched scientific collections worldwide and important taxonomic information on the deep sea polychaetes from the Albatross collections was later published by Chamberlin (1919), Treadwell (1923, 1929), and Fauchald (1972).

The Italian expeditions made on board the Liguria (1903-1905) included sites in western Mexico; as part of these cruises, Rosa (1907, 1908) described species of the planktonic families Tomopteridae and Alciopidae. From 1923 to 1938, the Department of Tropical Research of the New York Zoological Society made several expeditions on board the Templeton Crocker and Zaca & Treadwell (1931, 1937, 1941, 1942) identified the polychaetes collected from these research cruises, including pelagic species.

Berkeley & Berkeley (1939, 1960) identified the polychaetes collected by the Stranger expeditions (1934, 1937) in Mexican waters. Hartman (1939a, 1939b, 1940, 1941, 1944) analyzed the polychaetes deposited in the Allan Hancock Foundation collection, synonymized several species identified previously by Treadwell, and described material collected from 1931 to 1941 as part of the Pacific Expeditions on board Velero III and Velero IV. Later, Fauchald (1968, 1970) published a monography on the Eunicea from western Mexico, including specimens from the Velero expeditions, and, in 1972, as part of his PhD thesis, analyzed all the polychaete material in the Allan Hancock Foundation collection distributed in the Mexican Pacific.

Rioja, the first researcher settled in Mexico, described 35 new species (31 presently valid) whose locus typicus are basically in Acapulco (Guerrero), Mazatlan (Sinaloa), and La Paz (Baja California Sur) (Rioja, 1939, 1947a, 1947b) (Table 4). This faunal material was manually collected in the intertidal zone as part of numerous scientific expeditions. Unfortunately, Rioja's collection was never found and one of us (VSW) can assert that it does not exist.

In 1981, our group began the organized sampling of polychetes on board the R/V El Puma in the sublittoral zone of the Mexican Pacific that continues to this day. The information about the polychaete fauna collected in these oceanographic expeditions has been mainly published by Solis-Weiss, de Leon-Gonzalez, and Hernandez-Alcantara, each with different co-authors (Table 4). Up to now, 30 new polychaete species have been described for the continental shelf area and hydrothermal vents.

Thus, the historical contributions in the description of new species in the Mexican Pacific can be grouped into three main periods (Fig. 2). The first, at the end of the 1910s, was the result of Chamberlin's (1919) studies on the deep water biological material from the Tropical Pacific (20 currently valid species). The second, in the 1940s, was mainly due to Rioja's (1941a, 1941b, 1942a, 1942b, 1943a, 1943b, 1944a, 1947a, 1947b, 1947c,) and Hartman's (1940; 1941; 1944; 1947) publications. Rioja focused on the intertidal zone (24 new species), whereas Hartman analyzed part of the Allan Hancock Foundation collections (13 new species still valid) in the littoral and sublittoral zones. The third period began around the 1970s, when Fauchald's studies were published (1970, 1972), with 77 presently valid species from western Mexico, most (63 species) from the Gulf of California.

Beginning in the 1980s, most descriptions have been made by Mexican scientists in all regions of the Mexican littorals (Table 4). In fact, in the last 24 years, 10 Mexican authors have participated in the description of new polychaete taxa at a rate of about two species per year (Fig. 2), an important effort in a country where taxonomic studies are generally hindered by economic and political problems.

DISCUSSION

The description of 313 species (278 currently valid) from the Mexican Pacific over the last hundred years at a rate of 2.79 species per year is largely due to the monumental work done by Fauchald in the 1970s. He alone described 93 of the currently valid species (34%), which is more than a third of the total. These contributions made Mexico's Pacific zone the region with the largest number of described taxa in the country. From 1980 on, the rate of new species described decreased to two species per year due to a reduction in sampling and in taxonomic studies carried out after Fauchald's work and not because fewer new species remain to be described in the Mexican littorals. In fact, in 2006, four new species were described (Hernandez-Alcantara et al., 2006; Salazar-Vallejo & Harris, 2006).

[FIGURE 2 OMITTED]

Thus, we can state that the polychaete species richness in the Mexican Pacific is still underestimated and that the sampling effort has been uneven, mainly concentrated in the Gulf of California. This trend is the same when the number of authors and publications in each region of the Mexican Pacific are considered, suggesting that the number of described species in each of the regions is more an artifact than a biological phenomenon. As more studies are carried out in a specific Mexican Pacific region, the species number described for that region increases. Similarly, the highest numbers of species recorded for the families Nereididae, Onuphidae, and Polynoidae refect the individual interests of the authors for a particular group.

Faunal affinities among Pacific regions should also be cautiously analyzed since the habitat distribution data shows that the sampling effort has been predominantly carried out over "soft bottoms". Therefore, we predict many new descriptions when more samplings are done in algae, mangroves, or hard bottoms, or when the possibility of conducting deep-sea or hydrothermal vent studies can be increased; these deep-water habitats are characterized by unique environmental features, but also by difficult conditions and the need for complex sampling methods. These facts suggest that additional polychaete taxonomic studies could signifcantly change the interpretation of the currently accepted distribution patterns and affinities among the different biogeographic provinces.

This study shows that, despite the relevant results already obtained in this feld, the magnitude of the polychaete biodiversity in the Mexican Pacific has yet to be assessed and needs a sustained effort over time and space. The Mexican littorals are constantly altered by human actions, especially in recent times, making the need to increase this effort urgent, not only in order to evaluate the biodiversity, but also to monitor and study those alterations. The discovery of more new species will probably be related to a greater extent to studies in southern Mexico, in the Mexican biogeographic province, a marine zone where polychaete records are still unknown.

Received: 20 May 2005; Accepted: 11 March 2008.

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* This work was presented at the XXV Congreso de Ciencias del Mar de Chile and the X1 Congreso Latinoamericano de Ciencias del Mar (COLACMAR), in Vina del Mar, 16-20 May 2005.

Pablo Hernandez-Alcantara (1), Maria Ana Tovar-Hernandez (2) & Vivianne Solis-Weiss (3)

(1,3) Laboratorio de Ecologia y Biodiversidad de Invertebrados Marinos Instituto de Ciencias del Mar y Limnologia, Universidad Nacional Autonoma de Mexico Apartado Postal 70-305. C.P. 04510, Distrito Federal, Mexico

(2) Laboratorio de Poliquetos, El Colegio de la Frontera Sur, Unidad Chetumal Avenida Centenario Km 5.5, 77900, Chetumal, Quintana Roo, Mexico

Corresponding author: Vivianne Solis-Weiss (solisw@mar.icmyl.unam.mx)
Table 1. List of the species of polychaetes described for the
Mexican Pacific (* species not valid presently; *** new genera).

Tabla 1. Lista de especies de poliquetos descritas en el Pacifico
Mexicano (* especies no validas en la actualidad; *** genero
nuevo).

CLASS POLYCHAETA Grube, 1850

Family Acoetidae Kinberg, 1858

* Polyodontes californicus Treadwell, 1941: 20, figs. 9-12. Chamela
Bay, Jalisco (= Polyodontes lupinus (Stimpson, 1856) fide Pettibone,
1989b: 120).

Family Acrocirridae Banse, 1969

Acrocirrus incisa Kudenov, 1975b: 212-215, figs. 11-23. Puerto
Penasco, Sonora; rocks.

Flabelligela mexicana Fauchald, 1972: 223-224, pl. 45, figs. f-g.
Natividad Island, Baja California Sur; 1687-1696 m, green muds.

Flabelliderma macrochaeta Fauchald, 1972: 222-223, pl. 46, figs.
a-b. Punta Piedras, San Juanito, Nayarit; 1458 m. (= Flabelligella
macrochaeta (Fauchald, 1972) new status to Family Flabelligeridae
fide Light, 1978: 687).

Family Ampharetidae Malmgren, 1866

Ampharete homa Chamberlin, 1919: 444-447, pl. 77, figs. 7-8.
Tepuches, Sonora; 1546 m.

Amphicteis obscurior Chamberlin, 1919: 447-448, pl. 76, figs. 1-2,
pl. 77, fig. 3. Guerrero; 887 m.

Amphicteis orphnius Chamberlin, 1919: 450-451, pl. 76, figs. 3-4,
pl. 77, figs. 1-2. Guerrero; 887 m.

Amphicteis uncopalea Chamberlin, 1919: 448-450, pl. 76, figs. 5-6,
pl. 77, fig. 4. Nayarit; 1217 m.

Amphisamytha fauchaldi Solis-Weiss & Hernandez-Alcantara, 1994:
128-131, figs. 1 a-e. Guaymas Basin, Sonora, hydrothermal mounds;
2000-2020 m.

Anobothrus bimaculatus Fauchald, 1972: 289-291, pl. 56, figs. a-f.
Las Animas Island, Baja California; 864-1197 m.

Anobothrus mancus Fauchald, 1972: 291-293, pl. 59, figs. g-i.
Espiritu Santo Island, Baja California Sur; 711 m.

*** Ecamphicteis elongata Fauchald, 1972: 294-295, pl. 60, figs. a-d.
Cabo Falso, Baja California; 2610 m.

*** Egamella quadribranchiata Fauchald, 1972: 296-297, pl. 60, fig.
a. Natividad Island, Baja California Sur; 1080-1188 m.

Lysippe mexicana Fauchald, 1972: 299-301, pl. 61, figs. b-d.
Natividad Island, Baja California Sur; 779-830 m.

Melinna exilia Fauchald, 1972: 302-303, pl. 62, figs. a-c. Tortuga
Island, Baja California Sur; 1584-1620 m.

Melinna plana Fauchald, 1972: 304-305, pl. 63, figs. a-b. Tortuga
Island, Baja California Sur; 1584-1620 m.

Melinna tentaculata Fauchald, 1972: 305-307, pl. 64, figs. a-d. San
Jose Island, Baja California Sur; 2394 m.

*** Mexamage corrugata Fauchald, 1972: 310-312, pl. 65, figs. a-c.
Tortuga Island, Baja California Sur; 1584-1620 m.

Sabellides delus Chamberlin, 1919: 455-456, pl. 77, fig. 13. Western
Baja California; 1546 m. (= Amage delus (Chamberlin, 1919) fide
Fauchald, 1972: 278).

Sabellides manriquei Salazar-Vallejo, 1996: 143-147, figs. 1-10.
Northeastern Angel de la Guarda Island, Baja California; 65-82 m.

*Samythella interrupta Fauchald, 1972: 313-314, pl. 66, figs. a-b.
Natividad Island, Baja California Sur; 1080-1188 m. (= Samythella
elongata Verrill 1873 fide Jirkov 1986: 330).

*Samythella pala Fauchald, 1972: 315-316, pl. 66, figs. c-f.
Northern Gulf of California; 894 m. (= Samythella elongata Verrill
1873 fide Jirkov 1986: 330).

Family Amphinomidae Savigny in Lamarck, 1818

Chloeia entypa Chamberlin, 1919: 30-31, pl. 13, figs. 8-9, pl. 14,
figs. 1-2. Western Mexico; 118.8 m.

Eurythoe complanata mexicana Berkeley & Berkeley, 1960: 358. San
Carlos Bay, Sonora.

Linopherus kristiani Salazar-Vallejo, 1987: 77, figs. 1-2.
Manzanillo, Colima; 35 m.

Pseudeurythoe abyssalis Fauchald, 1972: 41-43, pl. 3, figs. a-f.
Natividad Island, Baja California Sur; 2322 m. (= Linopherus
abyssalis (Fauchald, 1972)).

Pseudeurythoe tripunctata Kudenov, 1975a: 70. Soldado Estuary,
Sonora; in mangrove roots. (= Linopherus tripunctata (Kudenov,
1975a)).

Family Aphroditidae Malmgren, 1867

Aphrodita falcifera Hartman, 1939a: 23-24, pl. 1, figs. 11-15, pl.
26, figs. 319-320. Cedros Island, Baja California; 18-27 m.

Aphrodita mexicana Kudenov, 1975a: 66, figs. 1-8. San Felipe, Baja
California; 29-38 m.

Aphrodita sonorae Kudenov, 1975c: 75. fig. 1. San Felipe, Baja
California; 36 m.

Pontogenia laeviseta Hartman, 1939a: 24-26, pl. 2, figs. 16-30.
Western Mexico and Pacific coasts of Panama; 144 m.

Family Arenicolidae Johnston, 1835

Arenicola glasselli Berkeley & Berkeley, 1939: 340. San Felipe,
Baja California.

Family Capitellidae Grube, 1862

Dasybranchus parplatyceps Kudenov, 1975b: 218-220, figs. 31-34.
Puerto Penasco, Sonora; in silt, under rocks.

Dasybranchus platyceps Hartman, 1947: 435-437, pl. 55, figs. 1-5.
Sonora.

*** Leiocapitella glabra Hartman, 1947: 438-439, pl. 54, figs. 1-3.
Baja California; 52-99 m.

*** Neonotomastus glabrus Fauchald, 1972: 245-246, pl. 50, figs. a-c.
San Jose Island, Baja California Sur; 2394 m.

*** Notodasus magnus Fauchald, 1972: 246-247, pl. 51, figs. a-c. Del
Carmen Island, Baja California Sur; 171 m.

Notomastus abyssalis Fauchald, 1972: 248-249, pl. 51, figs. d-g. San
Jose Island, Baja California Sur; 2322 m.

Notomastus angelicae Hernandez-Alcantara & Solis-Weiss, 1998b:
713-716, figs. 1a-f, 2. El Fuerte River, Sinaloa; in silt, 28 m.

Notomastus cinctus Fauchald, 1972: 250-251, pl. 50, figs. d-h. Maria
Magdalena Island, Nayarit; 3348 m.

Notomastus lobatus Hartman, 1947: 415-417, pl. 51, figs. 1-5.
Espiritu Santo Island, Baja California Sur; 29 m.

Notomastus sonorae Kudenov, 1975b: 221-223, figs. 35-39. Cholla Bay,
Sonora; in sand.

Family Chaetopteridae Malmgren, 1867

Mesochaetopterus mexicanus Kudenov, 1975b: 210-211, figs. 6-10.
Puerto Penasco, Sonora; in sand. Mesochaetopterus rickettsii
Berkeley & Berkeley, 1941: 43-44, figs. 15-16. Ensenada Estuary,
Baja California.

Family Chrysopetalidae Ehlers, 1864

Paleaequor psamathae Watson-Russell, 1986: 168-170, figs. 22-24.
Punta Pelicano, Sonora.

Paleonotus purpurea Rioja, 1947b: 517-519, figs. 1-7. El Mogote, La
Paz, Baja California Sur; in Pinna shells.

Family Cirratulidae Ryckholdt, 1851

* Cirratulus inhamatus Treadwell, 1937: 153, pl. 2, fig. 25. Eastern
Cedros Island, Baja California; 68.4 m. (= Aphelochaeta multifilis
(Moore, 1909) fide Hartman, 1956: 291 & Blake, 1991: 28).

* Cirratulus niger Hartman, 1939b: 17-18, fig. 3b. Socorro Island,
Colima; sand, 12.6-14.4 m. (= Cirriformia punctata (Grube, 1859)
fide Hartman, 1956: 292).

Cirratulus sinincolens Chamberlin, 1919: 377-379, pl. 70, figs.
7-10. Tepuches, Sonora; 1546 m.

Cirratulus revillagigedoensis Rioja, 1959: 250-254, figs. 1-13.
Ensenada Vargas Lozano, Socorro Island, Colima; swarming epitoke.

Family Cossuridae Day, 1963

Cossura brunnea Fauchald, 1972: 208-210, pl. 41, figs. a-e. Tortuga
Island, Baja California Sur; 1791 m.

Cossura rostrata Fauchald, 1972: 211-212, pl. 41, figs. f-h, pl. 42,
fig. a. Maria Madre Island, Nayarit; 3348 m.

Cossura sima Fauchald, 1972: 212-213, pl. 42, figs. b-d, pl. 43,
figs. a-d. Maria Madre Island, Nayarit; 3348 m. (= Cossurella sima
(Fauchald, 1972) fide Salazar-Vallejo & Donath-Hernandez, 1984: 62).

Family Dorvilleidae Chamberlin, 1919

Exallopus jumarsi Blake, 1985: 92-94, figs. 16-17. Guaymas Basin,
Sonora, hydrothermal mounds; 2000-2010 m.

Ophryotrocha platykephale Blake, 1985: 90, figs. 14-15. Guaymas
Basin, Sonora, hydrothermal mounds; 2000-2020 m. (Redescription in
Solis-Weiss & Hilbig, 1992: 92).

Family Eunicidae Savigny, 1818

Eunice biannulata mexicana Fauchald, 1970: 27-28, pl. 1, figs. f-g.
Isabel Island, Nayarit; 18-33 m, in coralline bottoms. (= Eunice
mexicana (Fauchald, 1970) fide Fauchald, 1992: 81).

Eunice cedroensis Fauchald, 1970: 29-31, pl. 2, figs. a-e. Todos los
Santos Island, Baja California; 73 m, sands, muds and shells.

Eunice megabranchia Fauchald, 1970: 33-36, pl. 4, figs. a-e.
Guaymas, Sonora; 894 m.

Eunice orensanzi de Leon-Gonzalez, 1990: 259-263, figs. 1a-g, 2a-d.
Baja California Sur; 65 m.

Eunice pulvinopalpata Fauchald, 1982a: 781-785. figs. 1a-f. East
Pacific Rise, geothermal vents at 21[degrees] N.

Eunice reducta Fauchald, 1970: 39-43, pl. 5, figs. a-i. De los
Frailes Bay, Baja California Sur; 48 m, sand.

Eunice semisegregata Fauchald, 1969: 8-10, figs. 4a-e. Acapulco,
Guerrero; 902 m, green muds.

Eunice sonorae Fauchald, 1970: 45-48. pl. 6, figs. a-g. Puerto
Penasco, Sonora; rocky intertidal. (Redescription in de
LeonGonzalez & Salazar-Vallejo, 1987).

Eunice unidentata Rioja, 1962: 175-178, figs. 77-83. San Roque
Island, Baja California Sur.

Eunice vittatopsis Fauchald, 1970: 50-52, pl. 7, figs. a-d. Ensenada
San Francisco, Sonora; intertidal.

Leodice segregata Chamberlin, 1919: 237-240, pl. 54, figs. 1-4.
Southwestern Mexico; 902 m, green muds. (= partim Eunice
semisegregata Fauchald, 1969 fide Fauchald, 1969: 8).

Marphysa angelensis Fauchald, 1970: 57-59, pl. 8, figs. a-h. Angel
de la Guarda Island, Baja California; 19.8 m, in sand.

Marphysa mixta Fauchald, 1970: 61-63, pl. 9, figs. a-h. Tangola Bay,
Oaxaca; intertidal.

Family Fauveliopsidae Hartman, 1971

Fauvelopsis rugosa Fauchald, 1972: 220-222, pl. 45, figs. a-e.
Natividad Island, Baja California Sur; 1696-1723 m.

Family Flabelligeridae de Saint-Joseph, 1894

Brada verrucosa Chamberlin, 1919: 399-400, pl. 68, figs. 3-6.
Western Mexico; 887.4 m, green muds.

Flabelliderma macrochaeta Fauchald, 1972: 222-223, pl. 46, figs.
a-b. Punta Piedras, San Juanito, Nayarit; 1458 m. (= Flabelligella
macrochaeta (Fauchald, 1972), new Genus and new status to Family
Acrocirridae fide Light, 1978: 687).

Ilyphagus bythincola Chamberlin, 1919: 402-403, pl. 69, figs. 4-9.
Western Mexico; 3496 m.

Ilyphagus caudatus Rioja, 1962: 191-195, figs. 94-98. Asuncion
Island, Baja California Sur; 21.6 m.

Pherusa abyssalis Fauchald, 1972: 226-228, pl. 47, figs. a-e.
Cerralvo Island, Baja California Sur; 1071 m.

Piromis gracilis Hartman, 1961: 123-124, pl. 29, figs. 1-4, pl. 30,
figs. 1-9. Oaxaca.

Piromis hospitis Fauchald, 1972: 229-231, pl. 48, figs. a-e. Del
Carmen Island, Baja California Sur; 171 m.

Family Glyceridae Grube, 1850

Glycera branchipoda Moore, 1911: 302-304, pl. 20, figs. 155-156, pl.
21, figs. 157-159. Off Cabo Colnett, Baja California; 2520 m.

* Glycera profundi Chamberlin, 1919: 350-352, pl. 64, figs. 2-6.
Sonora; 1546 m, muds. (= Glycera branchiopoda Moore, 1911 fide
Boggemann, 2002: 41).

Hemipodus armatus Hartman, 1950: 83, pl. 12, figs. 1-5. Petatlan
Bay, Guerrero; 9-18 m, hard sand and shell. (= Hemipodia armata
(Hartman, 1950) fide Boggemann, 2002: 84).

* Hemipodus mexicanus Chamberlin, 1919: 349-350, pl. 63, figs. 2-3.
San Pedro Nolasco Island, Sonora; 1130 m, brown muds with black
specks. (= Glycera branchiopoda Moore, 1911 fide Boggemann, 2002:
41).

Family Goniadidae Kinberg, 1866

*** Bathyglycinde mexicana Fauchald, 1972:108-110, pl. 23, figs. a-g.
Farallon Basin, Baja California Sur; 2394 m.

* Bathyglycinde cedroensis Fauchald, 1972: 107-108, pl. 23, figs.
h-n. Off Cedros Island, Baja California; 2362-2439 m, green muds.
(= Bathyglycinde lindbergi (Uschakov, 1955) fide Boggemann, 2005:
198).

Goniada acicula Hartman, 1940: 252, pl. 44, figs. 132-141. Eastern
Angel de la Guarda Island, Baja California; 72 m, sand.

Family Hesionidae Sars, 1862

*** Hesiolyra bergi Blake, 1985: 75, figs. 4a-h. East Pacific Rise,
geothermal vent at 21[degrees]N; 2615-2633 m.

Microphtalmus riojai Reish, 1968: 74, fig. 4a. De los Angeles Bay,
Baja California; in sands.

Orseis grasslei Blake, 1985: 78, figs. 6a-d. Guaymas Basin, Sonora,
hydrothermal mounds; 2010 m.

Family Lopadorrhynchidae Claparede, 1868

* Lopadorrhynchus parvum Chamberlin, 1919: 114, pl. 17, figs. 6-7.
Galero Point, Oaxaca; 540 m to surface. (= Lopadorrhynchus brevis
Grube, 1855 fide Tebble, 1962: 417).

Family Lumbrineridae Malmgren, 1867 emended Orensanz, 1990

Cenogenus eliae Hernandez-Alcantara, Perez-Mendoza & Solis-Weiss,
2006: 86-87, fig. 4. Punta Mita, Nayarit; 76 m, fne sand, silty
sand.

* Lumbrineris branchiata Fauvel, 1943: 22. Western Mexico (= Ninoe
dolichognata Rioja, 1941b fide Fauchald, 1970: 115).

Lumbrineris cedroensis Fauchald, 1970: 80-81, pl. 11, figs. a-e.
Cedros Island, Baja California; 1080-2439 m.

Lumbrineris crassidentata Fauchald, 1970: 82-83, pl. 12, fig. a. San
Felipe Bay, Baja California.

Lumbrineris eugeniae Fauchald, 1970: 87-89, pl. 13, figs. c-f. Punta
Eugenia, Baja California Sur; 1260 m.

Lumbrineris monroi Fauchald, 1970: 99-102, pl. 16, figs. e-i.
Acapulco, Guerrero; rocky coast. (= Scoletoma monroi (Fauchald,
1970)).

Lumbrineris penascensis Fauchald, 1970: 103-104, pl. 17, figs. a-c.
Puerto Penasco, Sonora.

Lumbrineris platylobata Fauchald, 1970: 104-106, pl. 17, figs. d-h.
Agua Verde Bay, Baja California Sur; 450 m, rocks. (= Scoletoma
platylobata (Fauchald, 1970)).

* Lumbrineris platypygos Fauchald, 1970: 106-108, pl. 18, figs. a-d.
Western Baja California Sur; sublittoral. (= Lumbrinerides acuta
(Verrill, 1875) fide Gardiner, 1976: 203).

* Lumbrineris simplex Hartman, 1944: 152-153, pl. 10, figs. 224-229.
Puerto Refugio, Angel de la Guarda Island, Baja California;
intertidal. (= Lumbrineris simplicis Hartman, 1944, new name,
preoccupied fide Hartman, 1959: 336).

Ninoe dolichognatha Rioja, 1941b: 722-723, pl. 7, figs. 9-15, pl. 8,
figs. 1-5. La Aguada, Acapulco, Guerrero and Mazatlan, Sinaloa;
intertidal. (= Kuwaita dolichognatha (Rioja, 1941b) fide
Carrera-Parra & Orensanz, 2002: 276).

Ninoe foliosa Fauchald, 1972: 153-156, pl. 29, figs. c-g, pl. 30,
figs. a-d. Angel de la Guarda Island, Baja California; 1121 m.

Ninoe fuscoides Fauchald, 1972: 156-158, pl. 31, figs. a-f. Creston
Island, Mazatlan, Sinaloa; 2448 m, (=Cenogenus fuscoides (Fauchald,
1972) fide Carrera-Parra, 2001: 721).

Ninoe jessicae Hernandez-Alcantara, Perez-Mendoza & Solis-Weiss,
2006: 83-85, fig. 2. Salina Cruz, Oaxaca; 70 m, muddy sands, muds.

Ninoe longibranchia Fauchald, 1972: 158-160, pl. 32, figs. a-g.
Tortuga Island, Baja California Sur; 1606 m.

Ninoe marthae Hernandez-Alcantara, Perez-Mendoza & Solis-Weiss,
2006: 85-86, fig. 3. Punta Maldonado, Guerrero; 50 m, muddy sand,
muds.

Ninoe moorei Rioja, 1941b: 718-722, pl. 6, figs. 4-9, pl. 7, figs.
1-8. La Aguada, Acapulco, Guerrero and Mazatlan, Sinaloa. (maybe
Kuwaita moorei (Rioja, 1941b) fide Carrera-Parra & Orensanz, 2002:
276).

Ninoe spinosa Rioja, 1941b: 724, pl. 8, figs. 7-9. La Aguada,
Acapulco, Guerrero and Mazatlan, Sinaloa. (maybe Kuwaita spinosa
(Rioja, 1941b) fide Carrera-Parra & Orensanz, 2002: 276).

Family Magelonidae Cunningham & Ramage, 1888

Magelona marianae Hernandez-Alcantara & Solis-Weiss, 2000: 630-634,
figs. 1a-g. Punta Mita, Nayarit; 22.2-79 m, in sands and clays.

Magelona tehuanensis Hernandez-Alcantara & Solis-Weiss, 2000:
634-637, figs. 2a-h. Tehuantepec, Oaxaca; 70-101 m, sands and muds.

*** Meridithia spinifera Hernandez-Alcantara & Solis-Weiss, 2000:
638-640, figs. 3a-h. Santa Maria Bay, Sinaloa; 39-100 m, in fne
sands and clays.

Family Maldanidae Malmgren, 1867

* Asychis lobata Fauchald, 1972: 256-258, pl. 52, figs. a-f. Punta
Piedras, San Juanito, Nayarit 1458 m. (= Chirimia biceps lacera
Moore, 1923 fide Light, 1980: 139).

Clymaldane laevis Fauchald, 1972: 259-260, pl. 53, figs. a-d. Off
the tip of Baja California Sur; 2576-2682 m.

Clymene (Euclymene) papillata Berkeley & Berkeley, 1939: 340-342,
figs. 11-12. Penasco Port, Sonora. (= Isocirrus papillatus (Berkeley
& Berkeley, 1939) fide Salazar Vallejo, 1991: 273).

* Euclymene papillata isocirra Rioja, 1962: 196-199, figs. 99-105. De
la Gaviota Island, Baja California Sur; under rocks. (= Isocirrus
papillatus (Berkeley & Berkeley, 1939) fide Salazar Vallejo, 1991:
273).

Maldane cristata Treadwell, 1923: 9-10, figs. 5-8. Western Baja
California; 855 m.

Maldane monilata Fauchald, 1972: 263-265, pl. 54, figs. c-g. Maria
Madre Island, Nayarit; 3456 m.

Nichomache ardwidssoni Blake, 1985: 97. East Pacific Rise,
geothermal vents at 21[degrees]N; 2615 m.

Family Nautiliniellidae Miura & Laubier, 1989

*** Santelma mirasetis (Fauchald, 1972): 59-60, pl. 8, figs. a-c. San
Telmo, Michoacan; 240 m. (New status to Family and Genera; type
species of the Genus Santelma fide Blake, 1993: 150).

Family Nephtyidae Grube, 1850

* Aglaophamus dicirris Hartman, 1950: 122-124, pl. 18, figs. 1-8.
Baja California (= Aglaophamus verrilli (McIntosh, 1855) fide
Gardiner, 1976: 155).

Aglaophamus erectans Hartman, 1950: 125-127, pl. 19, figs. 1-10.
Baja California.

Aglaophamus eugeniae Fauchald, 1972: 82-84, pl. 14, figs. a-e.
Natividad Island, Baja California Sur; 459-531 m.

Aglaophamus fossae Fauchald, 1972: 84-86, pl. 14, fig. f, pl. 15,
figs. a-i. Ballenas Channel, Baja California; 1071 m.

Aglaophamus paucillamellata Fauchald, 1972: 86-87, pl. 16, figs.
a-f. Natividad Island, Baja California Sur; 1696-1726 m.

Aglaophamus surrufa Fauchald, 1972: 87-89, pl. 16, figs. h-i, pl.
17, figs. a-c. Cabo Falso, Baja California Sur; 2178 m.

Nephtys bilobatus Kudenov, 1975a: 80-83, figs. 30-35. Cholla Bay,
Puerto Penasco, Sonora; in sands.

* Nephtys caecoides ferruginea Hartman, 1940: 241, pl. 42, figs.
110-114, pl. 43, fig. 115. Baja California Sur (= Nephtys ferruginea
Hartman, 1940 fide Hartman, 1950: 102).

Family Nereididae Johnston, 1851

Ceratocephale crosslandi americana Hartman, 1952: 16-19, pl. 4,
figs. 1-3. Baja California; 95.4-97.2 m, green muds.

Ceratocephale papillata de Leon-Gonzalez & Gongora-Garza, 1992:
418, figs. 1a-d, 2, 3. Western Baja California Sur; 52-220 m.

Ceratonereis singularis Treadwell, 1929: 1-3, figs. 1-8. San Jose
Island, Baja California.

Ceratonereis vermillionensis Fauchald, 1972: 66-69, pl. 10, figs.
a-e. San Jose Island, Baja California Sur; 2394 m.

Eunereis eugeniae de Leon-Gonzalez & Solis-Weiss, 2000: 550-552,
figs. 1a-g. Punta Eugenia, Baja California Sur.

*** Imajimainereis pacifica de Leon-Gonzalez & Solis-Weiss, 2000:
553-554, figs. 2a-f. Northern Gulf of California; 18 m.

Leptonereis glauca moniloceras Hartman, 1940: 217. pl. 34, figs.
42-46. Western Mexico and California. (= Nicon moniloceras
(Hartman, 1940) fide Imajima & Hartman, 1964: 150).

Leptonereis mexicana Treadwell, 1942: 1-4, figs. 2-9. Topolobampo
Bay, Sinaloa. (= Rullierinereis mexicana (Treadwell, 1942) fide
Pettibone 1971: 104).

Lycastopsis riojai Bastida-Zavala, 1990: 417-419, fig. 1a-f.
Partidito Island, Baja California Sur; littoral. (= Namanereis
riojai (Bastida-Zavala, 1990) fide Glasby, 1999: 104).

Neanthes cortezi Kudenov, 1979: 118-120, figs. 2a-h. Cholla Bay,
Puerto Penasco, Sonora.

Nereis ambiguus Treadwell, 1937: 149-151, pl. 2, figs. 19-24.
Clarion Island, Colima; 36 m.

Nereis angelensis Fauchald, 1972: 72-74, pl. 11, figs. e-j. Ballenas
Channel, Baja California; 1088 m.

Nereis anoculopsis Fauchald, 1972: 75-77, pl. 12, figs. a-g. Tortuga
Island, Baja California Sur; 1606 m.

Nereis baolingi de Leon-Gonzalez & Solis-Weiss, 2000: 557-558, figs.
4a-g. Punta Eugenia, Baja California Sur.

Nereis casoae de Leon-Gonzalez & Solis-Weiss, 2001: 881-882, figs.
1a-d, 2a-e. Los Chivos Island, Mazatlan, Sinaloa; 61 m, algae fxed
to coralline rocks.

Nereis fauchaldi de Leon-Gonzalez & Diaz-Castaneda, 1998: 823-825,
figs. 1a-d. Todos Santos Bay, Baja California; 210 m.

Nereis fossae Fauchald, 1972: 77-79, pl. 13, figs. a-i. Ballenas
Channel, Baja California; 1008 m.

Nereis imajimai de Leon-Gonzalez & Diaz-Castaneda, 1998: 825-827,
figs. 2a-d. Todos Santos Bay, Baja California; 210 m.

Nereis infata de Leon-Gonzalez & Solis-Weiss, 2001: 882-886, figs.
3a-d. Punta San Juanico, Baja California Sur; 30 m, sandy rocks.

Perinereis bajacalifornica de Leon-Gonzalez & Solis-Weiss, 1998:
675-677, figs. 2a-f. Falsa Bay, La Paz, Baja California Sur; in
mangroves.

Perinereis elenacasoi Rioja, 1947c: 531-532, figs. 8-17. Mazatlan,
Sinaloa; rocky littorals, in mytillids areas. (= Perinereis
elenacasoae (Rioja, 1947c), redescription in de Leon-Gonzalez &
Solis-Weiss, 1998: 680).

Perinereis osoriotafalli de Leon-Gonzalez & Solis-Weiss, 1998:
687-690, figs. 9a-f. De los Patos Island, Topolobampo, Sinaloa;
between algae.

Perinereis villalobosi Rioja, 1947c: 532-534, figs. 18-22. Mazatlan,
Sinaloa; ocky littoral, in mytillids areas.

Rullierinereis fauchaldi de Leon-Gonzalez & Solis-Weiss, 2000:
562-563, figs. 6a-e. San Cristobal Bay, Baja California.

Family Oenonidae Kinberg, 1865 emended Orensanz, 1990

* Arabella pacifica Treadwell, 1941: 23, figs. 18-21. Guerrero (=
Arabella semimaculata (Moore, 1911) fide Fauchald, 1970: 132).

Arabella pectinata Fauchald, 1970: 130-132, pl. 22, figs. a-f. El
Descanso, Baja California; intertidal.

Drilonereis mexicana Fauchald, 1970: 138-140, pl. 23, figs. a-c. San
Cristobal Bay, Baja California; 117 m, in sands with shells.

Labidognathus forcipes Hartman 1944: 180. San Benito Island, Baja
California; 11-146 m, endoparasite of Eunice sp., possibly E.
antennata (Savigny, 1820). (= Drilonereis forcipes (Hartman, 1944)
fide Pettibone, 1957: 176).

Labrorostratus zaragozensis Hernandez-Alcantara & Solis-Weiss,
1998a: 978-982, figs. 1-3. 30.3 m, Norte Rocas Consag, Sonora;
endoparasite of the polychaete Terebellides californica Williams,
1984.

*Oenone brevimaxillata Treadwell, 1931: 1-3, figs. 4-9. Western
Mexico. (= Lysarete brasiliensis Kinberg, 1865 fide Hartman, 1944:
185).

Family Onuphidae Kinberg, 1865

Australonuphis beltrani de Leon-Gonzalez & Gongora-Garza, 1993: 7,
figs. 1a-b, 2a-b, 3a-e. Chacala, Nayarit.

Diopatra denticulata Fauchald, 1968: 4-7, figs. 1a-g. Tenacatita
Bay, Guerrero; 81 m, sands and muds.

Diopatra farallonensis Fauchald, 1968: 7, figs. 1h-n. Farallon, Baja
California Sur; submarine canyon, 135 m.

Diopatra mexicana de Leon-Gonzalez, 1994: 58-60, figs. 1a-e. Western
Baja California Sur; 54 m, in.

Diopatra neotridens Hartman, 1944: 63-66, pl. 2, figs. 44-48, pl. 3,
figs. 49-54, pl. 16, fig. 334. Tortuga Bay, Baja California Sur;
47-56 m.

Diopatra papillata Fauchald, 1968: 11-12, pl. 2, figs. d-i. Angel de
la Guarda Island, Baja California; 72 m.

Hyalinoecia leucacra Chamberlin, 1919: 317-319, pl. 37, figs. 9-10,
pl. 38, figs. 1-3. Western Mexico; 1188 m.

Hyalinoecia tecton Chamberlin, 1919: 310-315, pl. 38, figs. 4-9, pl.
39, figs. 1-2. Maria Madre Island, Nayarit; 1217 m.

Mooreonuphis bajacalifornica de Leon-Gonzalez, 1988: 433-436, figs.
1a-d, 2a-d. Puerto Escondido, Baja California Sur; 30 m, epizoic on
oysters.

Mooreonuphis elsiae de Leon-Gonzalez, 1994: 62-64, figs. 2a-g, 3a-c.
Western Baja California Sur; 60 m, sandy muds.

Nothria abyssalis Fauchald, 1968: 19-20, pl. 4, figs. a-b. South of
Baja California Sur; 2575-2682 m. (= Kinbergonuphis abyssalis
(Fauchald, 1968) fide Fauchald, 1982b: 14).

Nothria guadalupensis Fauchald, 1968: 22-24, pl. 6, figs. e-l.
Guadalupe Island, Baja California; subtidal. (= Mooreonuphis
guadalupensis (Fauchald, 1968) fide Fauchald, 1982b: 59).

Nothria mexicana Fauchald, 1968: 25-26, pl. 7, figs. b-e. Baja
California Sur; 2700 m, silty clay. (= Onuphis mexicana (Fauchald,
1968) fide Fauchald, 1982b: 49).

Nothria pygidialis Fauchald, 1968: 26-27, pl. 7, figs. f-m.
Guadalupe Island, Baja California; rocky intertidal. (=
Kinbergonuphis pygidialis (Fauchald, 1968) fide Fauchald, 1982b:
31).

Nothria similis Fauchald, 1968: 28-29, pl. 4, figs. g-j. South San
Benito Island, Baja California; 95-544 m, fne green and coarse gray
sand. (= Onuphis similis (Fauchald, 1968) fide Fauchald, 1982b: 53).

Nothria stigmatis cirrata Hartman, 1944: 92-93, pl. 11, figs.
248-253. Puerto Refugio, Angel de la Guarda Island, Baja
California; 20-40 m, sand and shell. (= Mooreonuphis cirrata
(Hartman, 1944) fide Fauchald, 1982b: 58).

Onuphis acapulcensis Rioja, 1944a: 139-143, figs. 1-11. Acapulco,
Guerrero; littoral. (= Hirsutonuphis acapulcensis (Rioja, 1944a)
fide Paxton, 1986b: 51).

Onuphis cedroensis Fauchald, 1968: 31-34, pl. 8 figs. a-g. Cedros
Island, Baja California; 93-99 m, muds. (= Kinbergonuphis
cedroensis (Fauchald, 1968) fide Fauchald, 1982b: 16).

Onuphis litabranchia Chamberlin, 1919: 274-279, pl. 50, fig. 7, pl.
51, figs. 1-10, pl. 52, fig. 1. Western Mexico; 3382 m, green muds.
(= Sarsonuphis litabranchia (Chamberlin, 1919) fide Fauchald, 1982b:
75).

Onuphis microbranchiata Fauchald, 1968: 34-35, pl. 8, figs. h-q.
Guadalupe Island, Baja California; shallow waters. (= Mooreonuphis
microbranchiata (Fauchald, 1968) fide Fauchald, 1982b: 61).

Onuphis nannognathus Chamberlin, 1919: 270-274, pl. 43, figs. 8-11,
pl 44, figs. 1-5. Punta Arena, Baja California Sur; 1791 m, light
brown muds. (= Kinbergonuphis nannognathus (Chamberlin, 1919) fide
Fauchald, 1982b: 25).

Onuphis pigmentata Fauchald, 1968: 38-39, pl. 9, figs. f-n. San
Quintin Bay, Baja California; littoral mudfat. (= Kinbergonuphis
pigmentata (Fauchald, 1968) fide Fauchald, 1982b: 28).

* Onuphis profundi Fauchald, 1968: 40-41, pl. 10, figs. a-g. Baja
California Sur; 2700 m. (= Kinbergonuphis proalopus (Chamberlin,
1919) fide Fauchald, 1982b: 29).

Onuphis vermillionensis Fauchald, 1968: 41-43, pl. 11, figs. a-i.
Tiburon Island, Sonora; 126 m. (= Kinbergonuphis vermillionensis
(Fauchald, 1968) fide Fauchald, 1982b: 35).

Onuphis zebra Berkeley & Berkeley, 1939: 337-338, figs. 9-10. Punta
Gorda, Baja California. (= Hirsutonuphis zebra (Berkeley &
Berkeley, 1939) fide Paxton, 1986b: 51).

* Rhamphobrachium cristobalensis Fauchald, 1968: 44-46, pl. 12, figs.
b-i. San Cristobal Bay, Baja California Sur; 75 m. (incertae sedis,
maybe juvenil of Rhamphobranchium longisetosum Berkeley & Berkeley,
1938 fide Paxton, 1986a: 102).

Family Opheliidae Malmgren, 1867

Travisia flamentosa de Leon-Gonzalez, 1998: 12-14, figs. 1a-c.
Western Baja California; 55 m. Travisia fusifomis Kudenov, 1975b:
215-218, figs. 24-30. Cholla Bay, Puerto Penasco, Sonora; in sands.

Family Orbiniidae Hartman, 1942

Califa mexicana Fauchald, 1972: 164-166, pl. 33, figs. a-e. Creston
Island, Mazatlan, Sinaloa; 2475 m.

Haploscoloplos mexicanus Fauchald, 1972: 167-169, pl. 34, figs. c-d.
Las Animas Island, Baja California; 1395 m. (= Leitoscoloplos
mexicana (Fauchald, 1972) fide Mackie, 1987: 11).

Leitoscoloplos bajacalifornica de Leon-Gonzalez & Rodriguez, 1996:
169-171, figs. 1a-c. Western Baja California; 85-223 m.

Scoloplos (Leodamas) mazatlanensis Fauchald, 1972: 169-171, pl. 35,
figs. a-c. Creston Island, Mazatlan, Sinaloa; 2448 m.

Family Paraonidae Cerruti, 1909

Aricidea (Aedicira) alisetosa Fauchald, 1972: 173-175, pl. 35, figs.
d-f. Mazatlan, Sinaloa; 3060 m.

Aricidea (Aedicira) longicirrata Fauchald, 1972: 176-177, pl. 36,
fig. a. Creston Island, Mazatlan, Sinaloa; 2394 m.

Aricidea (Aricidea) crassicapitis Fauchald, 1972: 177-179, pl. 37,
figs. g-h. Punta San Ignacio, Baja California Sur; 2394 m.

Aricidea (Aricidea) petacalcoensis de Leon-Gonzalez,
Hernandez-Guevara & Rodriguez-Valencia, 2006: 258-259, figs. 1a-g.
Petacalco Bay, Guerrero; 11 m.

Aricidea (Aricidea) rosea Reish, 1968: 80, figs. 7a-c, 8. De los
Angeles Bay, Baja California. (= Aricidea (Acesta) lopezi rosea
Reish, 1968 fide Strelzov, 1979: 122).

Aricidea (Aricidea) similis Fauchald, 1972: 179-181, pl. 36, figs.
b-e. Cabo Falso, Baja California Sur; 2520 m.

Cirrophorus magdalenaensis de Leon-Gonzalez, Hernandez-Guevara &
Rodriguez-Valencia, 2006: 260-261,figs. 2a-d. Magdalena Bay, Baja
California Sur; 74 m.

Paraonides cedroensis Fauchald, 1972: 181-182. Natividad Island,
Baja California Sur; 1696-1723 m.

Paraonis gracilis oculata Hartman, 1957: 331-332, pl. 44, figs. 1-3.
Baja California. (= Levinsenia oculata (Hartman, 1957) fide
Melville, 1979: 114-118).

Paraonis pycnobranchiata Fauchald, 1972: 184-185, pl. 37, figs. a-f.
Punta Colorado, San Jose Island, Baja California Sur; 2408 m. (=
Levinsenia pycnobranchiata (Fauchald, 1972) fide Melville, 1979:
114-118).

Family Pectinariidae de Quatrefages, 1865

Pectinaria (Pectinaria) hartmanae Reish, 1968: 91-92, figs. 18a-e.
De los Angeles Bay, Baja California; in sands and silts bottoms.

Family Phyllodocidae Orsted, 1843

*Anaitides carloensis Kudenov, 1975a: 71-73, figs. 16-19. San Carlos
Bay, Sonora. (= Phyllodoce panamensis Treadwell, 1917 fide Pleijel,
1991: 253).

Anaitides cortezi Kudenov, 1975a: 73-75, figs. 20-24. San Agustin
Bay, Sonora. (= Phyllodoce cortezi (Kudenov, 1975a) fide Pleijel,
1991: 253).

Anaitides dubia Fauchald, 1972: 44-46, pl. 4, figs. a-b. Punta
Piedras, San Juanito Island, Nayarit; 1512 m. (= Phyllodoce dubia
(Fauchald, 1972) fide Pleijel, 1991: 253).

Anaitides minuta Treadwell, 1937: 148, pl. 2, figs. 16-18. Banco
Arena, Baja California Sur; 63 m. (Phyllodoce minuta (Treadwell,
1937) fide Pleijel, 1991: 259).

Austrophylum exsilium Fauchald, 1972: 47-48, pl. 5, figs. a-d. Maria
Magdalena Island, Nayarit; 3456 m.

Eulalia anoculata Fauchald, 1972: 49-50, pl. 6, figs. a-c. Cabo
Falso, Baja California Sur; 2160 m.

Eulalia mexicana Fauchald, 1972: 50-52, pl. 6, figs. d-f. San
Lorenzo Island, Baja California; 720 m.

Eumida uschakovi Kudenov, 1979: 116-117, figs. 1a-e. Cholla Bay,
Puerto Penasco, Sonora.

Phyllodoce (Anaitides) multiseriata Rioja, 1941b: 684-687, pl. 1,
figs. 26. La Aguada, Guerrero; on colonies of Idanthyrsus johnstoni.
(= Phyllodoce multiseriata Rioja, 1941b fide Pleijel, 1991: 259).

Phyllodoce digueti Fauvel, 1943: 10-13, fig. 1. Baja California.

Phyllodoce tuberculosa Kudenov, 1975a: 76-78, figs. 25-29. Morua
Estuary, Puerto Penasco, Sonora.

Pirakia brunnea Fauchald, 1972: 53-54, pl. 4, figs. c-d. Cabo Falso,
Baja California Sur; 2610 m. (= Sige brunnea (Fauchald, 1972) fide
Pleijel, 1991: 261).

Protomystides papillosa Blake, 1985: 72-75, figs. 3a-d. East Pacific
Rise, geothermal vents at 21[degrees]N; 2612-2633 m.

Family Pilargidae de Saint-Joseph, 1899

Ancistargis verrucosa Fauchald, 1972: 57-59, pl. 7, figs. d-e. Cabo
Falso, Baja California Sur; 2520 m.

Loandalia riojai Salazar-Vallejo, 1986: 202-204, lam. 3, figs.
19-22. Manzanillo Bay, Colima; 30-80 m, muds.

Loandalia salazarvallejoi de Leon-Gonzalez, 1991: 315-317, figs a-c.
Baja California Sur; 80 m, sandy muds.

Parandalia bennei Solis-Weiss, 1983: 370-373, figs. 1a-d, 2a-e.
Mazatlan, Sinaloa; 3.5-25 m, in fne and coarse sands.

Parandalia evelinae de Leon-Gonzalez, 1991: 317-319, figs. a-c. Baja
California Sur; 106 m, muddy sands.

Pilargis angeli Salazar-Vallejo & Harris, 2006: 132- 133, 4a-d.
Western Baja California Sur.

Pilargis mirasetis Fauchald, 1972: 59-60, pl. 8, figs. a-c. 59-60,
pl. 8, figs. a-c. San Telmo, Michoacan; 2340 m. (= Santelma
mirasetis (Fauchald, 1972), new status to Family Nautilieniellidae
fide Blake, 1993: 150).

Sigambra rugosa Fauchald, 1972: 60-62, pl. 9, figs. a-e. Espiritu
Santo Island, Baja California Sur; 720 m.

Sigambra setosa Fauchald, 1972: 62-64, pl. 7, figs. a-c. San Jose
Island, Baja California Sur; 2394 m.

Synelmis emiliae Salazar-Vallejo, 2003: 25-26, figs 1b, 4a-f.
Concepcion Bay, Baja California Sur; intertidal.

Synelmis harrisae Salazar-Vallejo, 2003: 30-32, figs. 1f, 8a-d. La
Jolla, California and Guadalupe Island, El Descanso and Punta
Morro, Baja California; mixed bottoms, intertidal to 65 m.

Synelmis levinae Salazar-Vallejo, 2003: 33-34, figs. 10a-d.
Northwestern Mexico; 810 m, coarse-grained cream-colored calcareous
oozes.

Family Poecilochaetidae Hannerz, 1956

Poecilochaetus multibranchiatus de Leon-Gonzalez, 1992: 109-113,
figs. 1a-e, 2a-d. Western Baja California Sur. 168 m.

Family Polynoidae Kinberg, 1856

* Admethella dolichopus Chamberlin 1919: 67-69, pl. 10, fig. 1. Maria
Madre Island, Nayarit; 1224 m. (= Admethella hastigerens
Chamberlin, 1919 fide Fauchald, 1972: 24).

Admethella hastigerens Chamberlin, 1919: 64-67, pl. 9, figs. 6-8.
Nayarit; 1224 m.

Antinoe anoculata Moore, 1910: pl. 30, figs. 34-40. California and
western Mexico (= Antinoella anoculata (Moore, 1910) fide Hartman,
1959: 62).

Bathykurila guaymensis Pettibone, 1989a: 159-161, figs. 1-2. Guaymas
Basin, Sonora, hydrothermal mounds; 2020 m.

*** Branchinotogluma hessleri Pettibone, 1985b: 450-453, figs. 1a-f,
2a-h. East Pacific Rise, geothermal vents at 21[degrees]N; 2618 m.

Branchinotogluma grasslei Pettibone, 1985b: 457-459, figs. 5a-h,
6a-h. East Pacific Rise, geothermal vents at 21[degrees]N; 2618 m.

*** Branchiplicatus cupreus Pettibone, 1985a: 151-156, figs. 1, 2a-f,
3a-g, 4a-i. East Pacific Rise, geothermal vents at 21[degrees]N; 2633 m.

*Eunoe exoculata Treadwell, 1923: 4-6, figs. 1-4. Pichilingue Bay,
Baja California Sur; 855 m. (= Harmothoe tenebricosa Moore, 1910
fide Pettibone 1969: 37).

Gorgoniapolynoe guadalupensis Pettibone, 1991: 700-704, figs. 9a-i,
10a-f. Guadalupe Island, Baja California; 1000-2000 m.

Halosydna glabra Hartman, 1939a: 35-36, pl. 4, figs. 43-50. Maria
Madre Island, Nayarit; 1224 m.

* Halosydna obtuso-cirrata Treadwell, 1937: 143-144, pl. 1, figs.
8-11.5. Eastern Cedros Island, Baja California; 72 m. (= Halosydna
latior Chamberlin, 1919 fide Hartman, 1938: 110).

Harmothoe mexicana Chamberlin, 1919: 54-58, pl. 1, figs. 1-9, pl. 2,
fig. 1. Angel de la Guarda Island, Baja California (= Lagisca
mexicana (Chamberlin, 1919) fide Salazar-Silva, 2006: 49).

Hololepidia veleronis Hartman, 1939a: 48-49, pl. 9, figs. 111-118.
Guaymas, Sonora.

Iphionella risensis Pettibone, 1986: 28. East Pacific Rise,
geothermal vents at 21[degrees]N; 2614-2626 m.

Lepidasthenia curta Chamberlin, 1919: 61-63, pl. 5, figs. 4-9.
Guaymas, Sonora; 1216 m.

Lepidasthenia digueti Gravier, 1905: 160-173, figs. 2-9. La Paz,
Baja California Sur; commensal of enteropneusts.

*Lepidasthenia ornata Treadwell, 1937: 145-147, pl. 1, figs. 12-15.
Banco Arena, Baja California; 63 m. (= Lepidasthenia virens
(Blanchard, 1849) fide Hartman, 1956: 271).

* Lepidonotus pilosus Treadwell, 1937: 141-143, pl. 1, figs. 1-7.
Banco Arena, Baja California Sur. (= Chaetacanthus magnifcus Grube,
1875 fide Hartman, 1939a: 28).

*** Lepidonotopodium fmbriatum Pettibone, 1983: 393, figs. 1-5. East
Pacific Rise, geothermal vents at 21[degrees]N; 2600 m. (emended genus by
Pettibone, 1984: 850).

*** Levensteiniella kincaidi Pettibone, 1985c: 741-746, figs. 1a-e,
2a-e, 3a-e. East Pacific Rise, geothermal vents at 21[degrees]N; 2617 m.

Macellicephaloides alvini Pettibone, 1989a: 162-164, figs. 3a-c,
4a-h. Guaymas Basin, Sonora, hydrothermal mounds; 2004 m.

Malmgrenia hartmanae Kudenov, 1975c: 77-79, fig. 2. San Felipe, Baja
California; 40 m. (= Halosydna hartmanae (Kudenov, 1975) fide
Hanley, 1987: 160).

Polynoe nesiotes Chamberlin, 1919: 72-74, pl. 8, fig. 8, pl. 9, figs.
1-5. Santa Margarita Island, Baja California. (= Halosydna nesiotes
(Chamberlin, 1919) fide Hanley, 1987: 160).

Subadyte mexicana Fauchald, 1972: 27-29, pl. 1, figs. a-e. Cedros
Island, Baja California; 567-844 m.

Family Sabellariidae Johnston, 1865

Idanthyrsus armatopsis Fauchald, 1972: 271-273, pl. 55, figs. a-g.
Las Animas Island, Baja California; 1386 m.

Idanthyrsus mexicanus Kirtley, 1994: 105, figs. 6.12.1a-c.
Tenacatita Bay, Jalisco; 45.7-64 m, rocks.

*Phragmatopoma moerchi digitata Rioja, 1962: 201, figs. 106-112. La
Ventosa, Salina Cruz, Oaxaca; intertidal. (=Phragmatopoma virgini
Kinberg, 1867 fide Kirtley, 1994: 37).

Family Sabellidae Latreille, 1825

* Euchone barnardi Reish, 1968: 93, figs. 19a-d. De los Angeles Bay,
Baja California (= Euchone incolor Hartman, 1965 fide Banse, 1970:
393).

* Euchone cortezi Reish, 1968: 94, figs. 20a-e. De los Angeles Bay,
Baja California (= Euchone arenae Hartman, 1966 fide Banse, 1970:
397).

*** Euchonella magna Fauchald, 1972: 328-329, pl. 68, figs. a-f.
Cerralvo Island, Baja California Sur; 1071 m.

Fabrisabella similis Fauchald, 1972: 329-330, pl. 69, figs. a-f.
Cabo Corrientes, Jalisco; 2520 m.

Megalomma pigmentum Reish, 1963: 430-432, figs. 15, 16a-i. San
Quintin Bay, Baja California.

*** Sabellonga disjuncta Hartman, 1969: 739-740, figs. 1-9. Western
Cedros Island, Baja California; 115 m, hard packed clay and rocks.
(New status to Family; type species of the Genus Sabellonga fide
Fitzhugh, 1989: 10).

Family Sabellongidae Hartman, 1969

Sabellonga disjuncta Hartman, 1969: 739-740, figs. 1-9. Western
Cedros Island, Baja California; 115 m, hard packed clay and rocks.
(New status to Family Sabellidae; type species of the Genus
Sabellonga fide Fitzhugh, 1989: 10).

Family Serpulidae Latreille, 1825

Eupomatus humilis Bush, 1904: 235, pls. 39, 49, figs. 22, 39, 40.
Western Mexico (= Hydroides humilis (Bush, 1904) fide Pillai, 1972).

Eupomatus similis Treadwell, 1929: 11-12, fig. 31. Baja California.

Hydroides brachyacantha Rioja, 1941a: 169, pl. 3, fig. 2, pl. 4,
figs. 1-9. Mazatlan, Sinaloa; rocky littoral.

*Hydroides californicus Treadwell, 1929: 12, figs. 32-33. Baja
California. (= Hydroides crucigera Moerch, 1863 fide Rioja, 1944b:
409).

Hydroides glandiferum Rioja, 1941a: 172-174, pl. 4, figs. 10-14.
Caleta, Acapulco, Guerrero; between algae and chaetopterid
tubes. (= *** Olgaharmania glandifera (Rioja, 1941a) new status to
Genus; type species of the Genus fide Rioja, 1941b: 733).

Hydroides malleophorus Rioja, 1942a: 126-130, figs. 7-14. Mazatlan,
Sinaloa; rocky littoral.

Hydroides ochotereana Rioja, 1941a: 164-167, pl. 2, figs. 1-12, pl.
3, fig. 1. La Aguada and La Quebrada, Acapulco, Guerrero; on rocks
covered by algae.

Hydroides recurvispina Rioja, 1941a: 167-169, pl. 1, figs. 11-15,
figs. 1a-c. La Aguada, Acapulco, Guerrero; between algae, hydroides
and sessil bivalves (Bisoarca).

Hydroides tenhovei Bastida-Zavala & de Leon-Gonzalez, 2002:
389-393, figs. 2a-m, 3a-h. Cabo San Lazaro, Baja California Sur;
sublittoral, on PVC structure.

Pileolaria (Pileolaria) lateralis Knight-Jones, 1978: 213-214, figs.
7a-n. Eastern La Paz, Baja California Sur.

Pileolaria (Pileolaria) marginata Knight-Jones, 1978: 214-215, figs.
8a-m. Todos Santos Bay, Baja California.

Pileolaria (Pileolaria) spinifer Knight-Jones, 1978: 215-217, figs.
9a-j. Eastern La Paz, Baja California Sur; intertidal.

Pomatocerus minutus Rioja, 1941a: 734-738, pl. 9, figs. 15-26.
Caleta, Acapulco, Guerrero; on hydroids Penaria sp.

Spirorbis (Pileolaria) berkeleyana Rioja, 1942b: 144-147, figs.
53-67. Playa Caleta and la Aguada, Acapulco, Guerrero; on serpulid
Spirobranchus incrassatus tubes.

Spirorbis (Spirorbella) bushi Rioja, 1942b: 149-150, figs. 25-35.
Caleta, Acapulco, Guerrero and Mazatlan, Sinaloa; on sessil
gastropods (Vermetus). (= Spirorbis bushi Rioja, 1942b fide
Knight-Jones et al., 1979: 423).

Spirorbis (Spirorbella) tricornigera Rioja, 1942b: 150-151, figs.
36-44. Caleta, Acapulco, Guerrero and Mazatlan, Sinaloa; on sessil
gastropods (Vermetus). (= Spirosbis tricornigerus Rioja, 1942b fide
Knight-Jones et al., 1979: 423).

*Spirorbis (Pileolaria) helenpixelli Rioja, 1942b: 143-144, figs.
45-52. Caleta and la Aguada, Acapulco, Guerrero; on serpulids
Spirobranchus incrassatus tubes. (= Pileolaria (Pileolaria)
militaris Claparede, 1868 fide Knight-Jones et al., 1979: 436).

Spirorbis (Pileolaria) spatulatus Knight-Jones, 1978: 206-207, figs.
3a-k. Punta Banda, Baja California; on Macrocystis pyrifera.

Vermiliopsis cornuta Rioja, 1947b: 525, figs. 14-21. Coromuel, La
Paz, Baja California Sur; on mollusks shells. (= Pseudovermilia
occidentalis (McIntosh, 1855) fide Zibrowius, 1971: 1374).

Family Sigalionidae Malmgren, 1867

Eulepethus mexicanus Berkeley & Berkeley, 1939: 328-332, figs. 4-8.
Grande Bay, Baja California; 10.8 m.

Leanira fmbriarum Hartman, 1939a: 70-72, pl. 18, figs. 217-225.
Escondido Bay, Baja California; 108 m. (= Sthenolepis fmbriarum
(Hartman, 1939a) fide Hartman 1968: 175).

Psammolyce fmbriata Hartman, 1939a: 74-75, pl. 20, figs. 244-245.
Isabel Island, Sinaloa.

Psammolyce myops Hartman, 1939a: 76, pl. 21, figs. 255-264. Espiritu
Santo Island, Baja California Sur.

Sigalion lewisii Berkeley & Berkeley, 1939: 326-328, figs. 2-3.
Espiritu Santo, Island, Baja California Sur; 19.8 m.

Sthenelais neoleanirae Hartman, 1939a: 67-69, pl. 17, figs. 203-216.
Escondida Bay, Baja California; 108 m.

Sthenolepis racemosa Fauchald, 1972: 34-36, pl. 2, figs. a-d.
Guaymas, Sonora; 1746 m. (= Neoleanira racemosa (Fauchald, 1972)
fide Fauchald & Hancock, 1981: 23).

Sthenolepis spargens Fauchald, 1972: 36-38, pl. 1, figs. e-h. Cedros
Island, Baja California; 3060-3348 m.

Family Spionidae Grube, 1850

Aonides californiensis Rioja, 1947a: 205-207, figs. 11-17. Coromuel,
La Paz, Baja California Sur; associated to Porites.

*** Lindaspio dibranchiata Blake & Maciolek, 1992: 724-727, figs.
1a-e, 2a-c. Guaymas Basin, Sonora, hydrothermal mounds; 1606 m.

Nerinides maculata Hartman, 1961: 91-92, pl. 12, figs. 1-4. Baja
California (= Spio maculata (Hartman, 1961) fide Maciolek, 1990:
1112).

Polydora anophthalma Rioja, 1962: 26. Asuncion Island, Baja
California Sur; 21.6 m, in mollusk shells. (= Boccardia anophthalma
(Rioja, 1962) fide Blake, 1981).

Polydora barbilla Blake, 1981: 947, fig. 1. Puerto Penasco, Sonora;
15 m. (= Dipolydora barbilla (Blake, 1981) fide Blake, 1996: 192).

Polydora cirrosa Rioja, 1943b: 233-238, figs. 8-25. Mazatlan,
Sinaloa; in submerged wood.

Polydora heterochaeta Rioja, 1939: 308-309, figs. 6-10. Acapulco,
Guerrero; postlarval planktonic forms.

Polydora rickettsi Woodwick, 1961: 78-80, figs. 1-7. Cabo San Lucas,
Baja California Sur.

Polydora wobberi Light, 1970: 74. San Francisquito Bay, Baja
California; 6 m.

Prionospio (Apoprionospio) vermillionensis Fauchald, 1972: 190-192,
pl. 38, figs. a-d. Tortuga Island, Baja California Sur; 1584-1620 m.

Prionospio (Prionospio) anuncata Fauchald, 1972: 193-194, pl. 39,
figs. a-e. Cabo Falso, Baja California Sur; 2520 m.

* Prionospio (Prionospio) lobulata Fauchald, 1972: 195-197, pl. 40,
figs. a-e. Natividad Island, Baja California Sur; 558 m. (=
Prionospio (Prionospio) ehlersi Fauvel 1928 fide Maciolek 1985:
345).

* Prionospio (Prionospio) longibranchiata Reish, 1968: 82-84, figs.
9a-e. De los Angeles Bay, Baja California. (= Prionospio (Minuspio)
delta Hartman, 1965 fide Maciolek, 1985: 358).

Spiophanes lowai Solis-Weiss, 1983: 373-377, figs. 3a-d, 4a-g, 5a-c.
Mazatlan, Sinaloa; in sands, 9m.

Family Sternaspidae Carus, 1863

Sternaspis maior Chamberlin, 1919: 406-407, pl. 78, fig. 10. San
Pedro Nolasco Island, Sonora; 1130 m, brown muds with black specks.

Family Syllidae Grube, 1850

Branchiosyllis pacifica Rioja, 1941b: 698-700, pl. 4, figs. 1-4.
Caleta, Acapulco, Guerrero; on rocks covered by algae.

Brania heterocirra Rioja, 1941b: 700-702, pl. 3, figs. 10-13.
Caleta, Acapulco, Guerrero; between algae and chaetopterid tubes of
Phyllochaetopterus sp. (= Grubeosyllis heterocirra (Rioja, 1941b)
fide Lopez et al., 1997: 63).

Brania limbata arenacea Rioja, 1943a: 217-220, figs. 32-37, 47.
Caleta, Acapulco, Guerrero; on rocks covered by algae.

*** Cicese sphaerosylliformis Diaz-Castaneda & San Martin, 2001:
714-716, figs. 5a-i. San Quintin Bay, Baja California; muddy sands.

Exogone glandulosa Rioja, 1943a: 225-227, figs. 22-30. Caleta,
Acapulco, Guerrero; between algae.

Haplosyllis spongicola brevicirra Rioja, 1941b: 695-696, pl. 4,
figs. 5-6. Acapulco, Guerrero; littoral. (= Haplosyllis brevicirra
Rioja, 1941b fide Salazar-Vallejo, 1989b: 48).

Odontosyllis heterodonta Gongora-Garza & de Leon-Gonzalez, 1993:
18, figs. 1a-g. Maria Madre Island, Nayarit; littoral, in algae and
sponges.

Pseudosyllides mexicana Gongora-Garza & de Leon-Gonzalez, 1993: 22,
figs. 3a-h. Maria Madre Island, Nayarit; littoral, in algae and
sponges. (= Inermosyllis mexicana (Gongora-Garza & de
Leon-Gonzalez, 1993) fide San Martin, 2003: 326).

Family Terebellidae Grube, 1850

Anisocirrus mexicanus Rioja, 1947a: 210-212, figs. 18-25. Punta
Colorada, La Paz, Baja California Sur; in mollusk shells. (=
Polycirrus mexicanus (Rioja, 1947a) fide Hutchings & Glasby, 1986b:
330).

Glossothelepus mexicanus Hutchings & Glasby, 1986a: 84, fig. 1.
Fraile Bay, Gulf of California; 16 m.

Nicolea latens Chamberlin, 1919: 430-432, pl. 79, figs. 10-11.
Tepuches, Sonora; 1546 m.

*** Paraxionice artifex Fauchald, 1972: 319-321, pl. 67, figs. a-e.
San Marcos Island, Baja California; 894 m.

Streblosoma longifilis Rioja, 1962: 216, figs. 118-123. De la
Asuncion Island, Baja California Sur; 21 m, among Macrocystis sp.
rhyzoids.

* Streblosoma magna Treadwell, 1937: 155-156, pl. 2, figs. 26-28.
Banco Arena, Baja California Sur; 63 m. (= Thelepus crispus
Johnson, 1901 fide Hartman, 1956: 297).

* Streblosoma uncinatus Kudenov, 1975b: 224-226, figs. 40-44. Beach
Station, Puerto Penasco, Sonora; intertidal, in sands. (=
Streblosoma longifilis Rioja, 1962 fide Salazar-Vallejo, 1985: 216).

Family Tomopteridae Grube, 1848

Tomopteris (Johnstonella) aloysii sabaudiae Rosa, 1907: 176; 1908:
274, pl. 12, figs. 3-6. Mexican Pacific.

Tomopteris (Johnstonella) duccii Rosa, 1907: 176; 1908: 273, pl. 12,
figs. 1-2. Mexican Pacific.

Table 2. Number of species described in each marine
and coastal habitat from the Mexican Pacific.

Tabla 2. Numero de especies descritas en cada
habitat marino y costero del Pacifico mexicano.

                                                  Species
                                     Species     currently
Habitat                             described      valid

Algae                                   11           11
Mangroves                                2            2
Hard bottoms                            25           22
Continental shelf (soft bottoms)        66           65
Deep-sea (soft bottoms)                 88           78
Hydrothermal vents                      17           17
Others (parasites, larval                4            4
  planktonic forms, epitokes)
Habitat not indicated                  100           79

Table 3. Number of species described for each biogeographic
province.

Tabla 3. Numero de especies descritas en cada provincia
biogeografica.

                                                Species
                                    Species    currently
Biogeographic province             described     valid

Californian                            77          65
Cortes                                170         155
Mexican                                47          43
Panamic                                 6           4
Local distribution not indicated       13          11

Table 4. Authors who have described polychaete species from the
Mexican Pacific, year of description and number of species described.

Tabla 4. Autores que han descrito las especies de poliquetos del
Pacifico mexicano, ano de descripcion y numero de especies descritas.

                                                             Species
                                                 Species    currently
Authors and years of descriptions               described     valid

Bastida-Zavala (1990)                               1           1
Bastida-Zavala & de Leon-Gonzalez (2002)            1           1
Berkeley & Berkeley (1939, 1941, 1960)              7           7
Blake (1981, 1985)                                  7           7
Blake & Maciolek (1992)                             1           1
Bush (1904)                                         1           1
Chamberlin (1919)                                  24          20
de Leon-Gonzalez (1988, 1990, 1991, 1992,           8           8
  1994, 1998)
de Leon-Gonzalez & Diaz-Castaneda (1998)            2           2
de Leon-Gonzalez & Gongora-Garza (1992, 1993)       2           2
de Leon-Gonzalez & Rodriguez (1996)                 1           1
de Leon-Gonzalez & Solis-Weiss                      8           8
  (1998, 2000, 2001)
de Leon-Gonzalez, Hernandez-Guevara &               2           2
  Rodriguez-Valencia (2006)
Diaz-Castaneda & San Martin (2001)                  1           1
Fauchald (1968, 1969, 1970, 1972, 1982a)          101          93
Fauvel (1943)                                       2           1
Gongora-Garza & de Leon-Gonzalez (1993)             2           2
Gravier (1905)                                      1           1
Hartman (1939a, 1939b, 1940, 1941, 1944,           27          24
  1947, 1950, 1952, 1957, 1961, 1969)
Hernandez-Alcantara & Solis-Weiss                   5           5
  (1998a, 1998b, 2000)
Hernandez-Alcantara, Perez-Mendoza &                3           3
  Solis-Weiss (2006)
Hutchings & Glasby (1986a)                          1           1
Kirtley (1994)                                      1           1
Knight-Jones (1978)                                 4           4
Kudenov (1975a, 1975b, 1975c, 1979)                16          14
Light (1970)                                        1           1
Moore (1910, 1911)                                  2           2
Pettibone (1983, 1984, 1985a, 1985b, 1985c,         9           9
  1986, 1989a, 1991)
Reish (1963, 1968)                                  7           4
Rioja (1939, 1942a, 1942b, 1943a, 1943b,           35          31
  1944a, 1947a, 1947b, 1947c, 1959, 1962)
Rosa (1907, 1908)                                   2           2
Salazar-Vallejo (1986, 1987, 1996, 2003)            6           6
Salazar-Vallejo & Harris (2006)                     1           1
Solis-Weiss (1983)                                  2           2
Solis-Weiss & Hernandez-Alcantara (1994)            1           1
Treadwell (1923, 1929, 1931, 1937,                 16           6
  1941, 1942)
Watson-Russell (1986)                               1           1
Woodwick (1961)                                     1           1
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Title Annotation:Research Article
Author:Hernandez-Alcantara, Pablo; Tovar-Hernandez, Maria Ana; Solis-Weiss, Vivianne
Publication:Latin American Journal of Aquatic Research
Date:Jan 1, 2008
Words:14155
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