dorsal cirri globular. Dorsum with longitudinal rows of globular tuber- 

 cles. Pharynx with middorsal tooth; trepan questionably present. 



Eurysyllis tuberculata Ehlers, -1864 

 Figures 30-93, 94a-d 



Eurysyllis tuberculata — Fauvel, 1923:271, fig. lOli-o. 



Eurysyllis tuberculata — Laubier, 1968:93, figs. 7, 8, 10c. 



Eurysyllis tuberculata — Hartmann-Schroder, 1971:164. 



Eurysyllis tuberculata — Day, 1973:34. 



MATERIAL EXAMINED: 

 Gulf of Mexico BLM-OCS: 



SOFLA 24C-11/80 (2 spec, USNM 75278); MAFLA 2533B-6/75 (1 spec, USNM 

 65671). 

 DESCRIPTION: 



Length, to 1.8 mm (previously reported to 5 mm); width, to 0.3 mm. Body 

 short, flattened; complete specimen with 36 setigers. Prostomium wider 

 than long, anteriorly lobed; with four dorsal, lentigerous eyes (Figure 

 30-94a); with or without two small ocular spots medial to eyes. Anten- 

 nae globular; median antenna arising from anterior border of prostomium; 

 lateral antennae arising anteroventrally. Palps ventral, globular, 

 contiguous. Dorsal tentacular cirri arising from extensions of peristo- 

 mium lateral to eyes; ventral tentacular cirri smaller, not visible 

 dorsally. Dorsal cirri globular, situated on stout segmental exten- 

 sions. Ventral cirri auricular, generally fused with setal lobes; tips 

 free, extending beyond parapodia. Anal cirri paired, globular. Dorsum 

 with four longitudinal rows of large, globular tubercles. Composite 

 falcigers with short, finely serrate, unidentate blades (Figure 30-94b). 

 Posterior setigers with slender, falcate inferior simple seta (Figure 

 30-94c). Superior simple seta absent. Acicula distally expanded, mu- 

 cronate (Figure 30-94d). Pharynx extending to setigers 2-5, with mid- 

 dorsal tooth; trepan not visible. Proventricle barrel-shaped, extending 

 from setigers 2-6 to 5-8, with about 15 muscle cell rows. Posterior 

 region of one specimen from setiger 25 beginning modification into 

 sexual stolon. 



REMARKS: Many BLM-MAFLA specimens identified as Eurysyllis tuberculata 

 are in fact Plakosyllis quadrioculata; see "REMARKS" under P. quadriocu- 

 lata. E_. tuberculata is newly reported from the Gulf of Mexico. 

 PREVIOUSLY REPORTED HABITAT: Intertidal to a few meters; vermetid 

 reefs. 



GULF OF MEXICO BLM-OCS OCCURRENCE: Two stations off northwestern and 

 southwestern Florida (Figure 30-93); 67-88 m; coarse to medium sand. 

 DISTRIBUTION: North Atlantic to Mediterranean, Red Sea, Madeira, North 

 Carolina, Gulf of Mexico. 



Genus Plakosyllis Hartmann-Schroder, 1956 



TYPE SPECIES: Plakosyllis brevipes Hartmann-Schroder, 1956. 

 REFERENCES: 



Hartmann-Schroder, 1956:37. 

 Fauchald, 1977a:83. 



30-99 



