Odontosyllis enopla — Galloway and Welch, 1911:1-26, figs. 1-30, pis. 1- 



5. 



Odontosyllis enopla — Ilartraan, 1951a:41. 



MATERIAL EXAMINED: 

 Gulf of Mexico BLM-OCS: 



SOFLA 4-11/80 (1 spec, USNM 89880), 16E-7/81 (3 spec, USNM 89879); 

 MAFLA 2207C-7/76 (2 spec), 2207K-11/77 (1 spec), 2208G-8/77 (1 spec), 

 2209D-7/76 (1 spec), 2209C-8/77 (1 spec), 22101-7/76 (1 spec), 2210J- 

 7/76 (1 spec), 2211H-7/76 (1 spec), 2211J-7/76 (1 spec), 2316H-8/76 

 (1 spec), 2313G-11/77 (1 spec), 2318J-11/77 (1 spec), 2419H-2/78 (1 

 spec), 2420B-7/76 (1 spec), 2421E-7/76 (2 spec, USNM 65677), 24221- 

 7/76 (1 spec), 2424H-7/76 (1 spec), 2528A-6/75 (1 spec, USNM 65676), 

 2528-11/77 (1 spec), 2531H-6/75 (1 spec), 26411-6/75 (1 spec), 2645G- 

 11/77 (1 spec); STOCS HRl-6/76 (1 spec, USNM 75219). 

 Supplementary Material: 



Gulf of Mexico — Tampa Bay, Florida, J. Taylor ID. (2 spec, USNM 45546). 

 Bermuda — Spanish Port, small boat harbor near sunken barge breakwater, 

 May 1976, M. L. Jones coll., T. H. Perkins ID. (4 spec, USNM 65881). 

 DESCRIPTION: 



Length, to 6.3 ram (previously reported to 25 mm); width, to 0.5 mm 

 (previously reported to 1.5 mm). Body stout anteriorly; complete speci- 

 mens with up to 54 setigers; sometimes with one thin, dark, transverse, 

 dorsal stripe per segment. Prostomium rounded anteriorly, bilobed pos- 

 teriorly (Figure 30-76a); with four large, lentigerous eyes, and 0-2 

 ocular spots at base of palps. Median antenna long, arising between 

 anterior eyes; lateral antennae shorter than median one, inserted near 

 anterior margin of prostomium. Palps irregularly quadrangular, shorter 

 than prostomium, sometimes directed ventrally. Nuchal organs as large, 

 crescent-shaped, often pigmented ridges along posterior border of pro- 

 stomium. Occipital flap usually semicircular, covering posterior por- 

 tion of prostomium. Dorsal cirri alternating in length, with longer 

 cirri usually about equal to body width. Ventral cirri auricular, 

 sometimes extending beyond parapodia anteriorly. Anal cirri paired, 

 long, cirriform. Composite falcigers numerous, with short bidentate 

 blades and fimbriated sheath connecting blade to shaft-head (Figure 30- 

 76b, c). Superior simple seta slender, present posteriorly (Figure 30- 

 76d). Inferior simple seta thicker, bidentate (Figure 30-76e). Acicula 

 distally constricted, with numerous serrations surrounding small, coni- 

 cal tip (Figure 30-76f). Pharynx divided into anterior section and more 

 muscular posterior section containing ventral arc of six recurved teeth, 

 two lateral plates (Figure 30-76g), and up to four smaller teeth between 

 ventral arc and each lateral plate. Proventricle extending from seti- 

 gers 5-7 to 8-11, with 49 (42-58) muscle cell rows. 



REMARKS: Most specimens originally identified as Odontosyllis fulgurans 

 in the BLM-MAFLA collections are herein referred to 0_. enopla. 

 PREVIOUSLY REPORTED HABITAT: Luminescent sexual forms have been ob- 

 served to swarm in surface waters of the West Indies. 



GULF OF MEXICO BLM-OCS OCCURRENCE: Common in northeastern Gulf plus 

 one station off Texas (Figure 30-75); 10-189 m; coarse to fine-very fine 

 sand, silty fine to very fine sand, clayey to sandy silt. 

 DISTRIBUTION: Barbados, Bermuda, Gulf of Mexico. 



30-82 



