stout, distally blunt to bifid (Figure 30-144f), present posteriorly. 

 Inferior simple seta bidentate (Figure 30-144g), present posteriorly. 

 Pharynx extending to setigers 4-8; margin smooth and surrounded by ten 

 soft papillae; middorsal tooth subterminal. Proventricle extending from 

 setigers 3-9 to 6-13, with 29 (27-32) muscle cell rows. Ventricle 

 occupying two setigers. Pharynx 0.8-1.5 times length of proventricle; 

 proventricle 2.6-3.4 times longer than wide. 



REMARKS: This species was originally confused with S_. hyalina and S_. 

 aciculata in BLM-OCS collections. 



GULF OF MEXICO BLM-OCS OCCURRENCE: Several stations off Florida and 

 Texas (Figure 30-143); 19-91 m; coarse to fine-very fine sand, silty 

 fine sand. 



Syllis (Typosyllis) prolifera Krohn, 1852 

 Figures 30-145, 146a-g 



Syllis prolifera Krohn, 1852:66. 



Syllis ( Typosyllis ) prolifera — Fauvel, 1923:261, fig. 97a-g. 



Typosyllis prolifera — Imajima, 1966:292, fig. 65a-n. 



Syllis ( Typosyllis ) prolifera— Day, 1967:248, fig. 12.3.g-i; 1973:30. 



MATERIAL EXAMINED: 

 Gulf of Mexico BLM-OCS: 



MAFLA 2211H-7/76 (1 spec), 2315A-8/76 (1 spec), 23181-11/77 (2 spec), 

 2528F-1/76 (2 spec), 2528-11/77 (2 spec), 2854-8/77 (1 spec, USNM 

 55832; 2 spec). 

 DESCRIPTION: 



Length, to 29.0 mm (previously reported to 35 mm); width, to 1.0 mm 

 (previously reported to 1.7 mm). Body fairly large, stout, elongate; 

 complete specimens with up to 101 setigers. Anterior dorsum of pre- 

 served specimens often with two transverse light brown stripes per 

 segment, fading out in midbody region. Prostomium rounded to rectangu- 

 lar, with four lentigerous eyes, and with or without two ocular spots 

 near base of palps (Figure 30-146a). Median antenna with 12-31 arti- 

 cles, lateral antennae with 9-23 articles. Palps bluntly triangular. 

 Dorsal tentacular cirri with 13-29 articles, ventral ones with 8-16 

 articles. Dorsal cirri fairly long, with 8-42 articles anteriorly, 6-45 

 articles medially. Ventral cirri long, digitiform, extending beyond 

 parapodia anteriorly, becoming much shorter posteriorly. Pygidium with 

 paired cirri having 16-31 articles, and a short digitiform midventral 

 cirrus. Composite falcigers bidentate, with more or less rounded teeth 

 and coarse serrations (Figure 30-146b-e), blade-length ratios 1.6-2.1:1 

 anteriorly, 1.3-2:1 medially, 1.5-2.1:1 posteriorly. Superior simple 

 seta bifid (Figure 30-146f), inferior simple seta slender, bidentate 

 (Figure 30-146g), present posteriorly. Pharynx extending to setigers 7- 

 12; anterior margin surrounded by ten soft papillae; middorsal tooth 

 subterminal. Proventricle extending from setigers 8-13 to 10-20, with 

 32 (27-40) muscle cell rows. Ventricle occupying 2-5 setigers. Pharynx 

 0.8-1.5 times length of proventricle; proventricle 2.3-3.3 times longer 

 than wide. 



REMARKS: This species was originally confused with S. variegata in BLM- 

 MAFLA collections. 

 PREVIOUSLY REPORTED HABITAT: Intertidal to 30 m; on corals. 



30-150 



