stout, pointed (Figure 30-22b), present from setiger 1. Superior com- 

 posite falcigers unidentate, short-bladed, blades smooth or with several 

 coarse serrations (Figure 30-22c). Inferior composite falcigers with 

 smooth blades (Figure 30-22d). Inferior simple seta slender, smooth, 

 pointed (Figure 30-22e), present on posterior setigers. Acicula soli- 

 tary, stout, with bent tips (Figure 30-22f). Pharynx extending to 

 setigers 2-3, with subterminal dorsal tooth. Proventricle located in 

 setigers 3-4, with about 12 indistinct muscle cell rows. Gametes pres- 

 ent from setigers 7 (1 female paratype) or 8 (1 male paratype). 

 REMARKS: S_. taylori differs from the European S. hystrix in body size, 

 length of the pharynx and proventricle, and in details of setal morphol- 

 ogy and arrangement (see Perkins, 1981:1142 for additional remarks). 

 PREVIOUSLY REPORTED HABITAT: To 11 m; sand, coarse calcareous sand, 

 Zostera beds. 



GULF OF MEXICO BLM-OCS OCCURRENCE: Three scattered records off Florida 

 (Figure 30-21); 27-90 m; medium to fine sand. 

 DISTRIBUTION: Connecticut, Maryland, Florida, Gulf of Mexico. 



Sphaerosyllis piriferopsis Perkins, 1981 

 Figures 30-23, 24a-f 



Sphaerosyllis piriferopsis Perkins, 1981:1133, figs. 23a-f, 24a-i. 



MATERIAL EXAMINED: 

 Gulf of Mexico BLM-OCS: 



SOFLA 8A-11/80 (1 spec, USNM 75299), 12A-11/80 (5 spec, USNM 75300); 

 MAFLA 2209H-8/77 (1 spec), 2211J-7/76 (1 spec), 2422C-7/76 (1 spec), 

 2529A-2/78 (1 spec), 2530D-6/75 (3 spec), 2531K-2/78 (10 spec), 

 2533B-6/75 (2 spec), 2645H-6/75 (5 spec), 2645-2/76 (4 spec, USNM 

 55835); ST0CS SB3-3 4/76 (8 spec, USNM 75222; 2 spec), SB3-6 Sp/76 (13 

 spec, USNM 75223). 

 Supplementary Material: 



Flor ida--Hutchinson Island, St. Lucie County, T. Perkins ID., FSBC I 

 23603 (8 paratypes), 23613 (3 paratypes), 23617 (2 paratypes). 

 DESCRIPTION: 



Length, to 3.3 mm (previously reported to 2.3 mm); width, to 0.2 mm 

 (previously reported to 0.12 mm without parapodia). Body slender, 

 thread-like; complete specimens with up to 42 setigers. Papillae short, 

 scattered. Prostomium rectangular, with four lentigerous eyes in trape- 

 zoidal arrangement (Figure 30-24a). Internal organs of head region 

 sometimes red-pigraented. Antennae onion-shaped, median antenna inserted 

 near posterior border of prostomium, lateral antennae at anterior bor- 

 der. Palps about twice as long as prostomium, fused dorsally, usually 

 curved ventrally. Tentacular cirri onion-shaped, arising lateral to 

 eyes. Dorsal cirri onion-shaped, absent from setiger 2. Ventral cirri 

 digitiform, about as long as parapodia. Anal cirri paired, onion-shaped 

 or subulate, slightly longer than dorsal cirri. Parapodial glands 

 inconspicuous or absent. Superior simple seta stout, slightly hooked at 

 tip, present on all setigers (Figure 30-24b). Superior composite falci- 

 gers long-bladed, unidentate, with fine serrations (Figure 30-24c); 

 inferior falcigers with shorter blades having few serrations or smooth 

 (Figure 30-24d). Inferior simple seta slender, distally hooked (Figure 

 30-24e), present on posterior setigers. Acicula solitary, stout, with 

 bent tips (Figure 30-24f). Pharynx extending to setiger 4, with large 



30-31 



