DISTRIBUTION: Gulf of Mexico, eastern Atlantic, Mediterranean, Gulf of 

 Elat, Red Sea. 



Pionosyllis sp. B 



Figures 30-61, 62a-f 



MATERIAL EXAMINED: 

 Gulf of Mexico BLM-OCS: 



MAFLA 23131-11/77 (1 spec), 2313K-2/78 (1 spec), 2536B-9/75 (1 spec, 

 USNM 65684), 2536E-7/76 (1 spec); STOCS 3/1-4 W/76 (1 spec, USNM 

 89891), 3/III-1 F/76 (1 spec, USNM 89890). 

 Supplementary Material: 



Texas— East Flower Gardens, 27°57.10'N, 93°35.13'W, 95 m (2 spec). 

 Puerto Rico—San Juan, IEC SJ 008-008, 18°30.7 'N, 66°10.6'W, 165 m, Jan. 

 1980 (1 spec). 

 DESCRIPTION: 



Length, 13+ mm; width, to 0.7 mm. Body long, robust anteriorly; com- 

 plete specimens with up to 72 setigers. Prostomium triangular, with two 

 minute pigment spots at base of palps, with or without four small eyes 

 (Figure 30-62a). Antennae and tentacular cirri fairly short, slender, 

 weakly to distinctly articled. Palps longer than prostomium, fused 

 basally. Nuchal organs as pigmented ridges along posterior border of 

 prostomium. Dorsal cirri shorter than body width, weakly to distinctly 

 articled. Ventral cirri arising about midway on parapodia, extending 

 slightly beyond parapodia. Pygidium with two long, articled anal cirri 

 plus slender, midventral cirrus. Composite falcigers numerous anterior- 

 ly, with long, lightly serrate, knob-tipped or minutely bidentate blades 

 (Figure 30-62b,c), blade-length ratio approximately 2-5:1. Superior 

 simple seta slender, faintly serrate (Figure 30-62d), present posterior- 

 ly. Inferior simple seta stout, minutely bidentate (Figure 30-62e), 

 present posteriorly. Acicula thick, numbering 4-5 in anterior para- 

 podia, slightly emergent; numbering 1-2 in posterior parapodia, strongly 

 emergent (Figure 30-62f). Pharynx extending to setigers 6-9, with 

 large, subterminal dorsal tooth, and smooth margin surrounded by ten 

 soft papillae. Proventricle extending from setigers 6-9 to 9-14, with 

 about 23-30 muscle cell rows. Gametes present from setiger 33. 

 REMARKS: Identifications of this species were confused with several 

 other species in the BLM-OCS Gulf of Mexico collections. 



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

 Texas_ (Figure 30-61); 38-189 m; coarse to medium-fine sand, clayey sandy 

 silt, clayey silt. 



Pionosyllis gesae Perkins, 1981 

 Figures 30-63, 64a-d 



Pionosyllis gesae Perkins, 1981:1105, fig. lOa-k. 



MATERIAL EXAMINED: 



Gulf of Mexico BLM-OCS: 



MAFLA 2210C-7/76 (1 spec), 2211B-7/76 (1 spec, USNM 90625), 2211G-7/76 



(2 spec), 2316J-8/76 (1 spec), 2316K-8/76 (1 spec), 2318G-8/76 (1 



spec), 2318K-8/76 (1 spec), 2420-7/76 (1 spec, USNM 65776), 2422C- 



30-69 



