4b. Pharynx nearly three times as long as proventricle (Figure 30- 



90a); body narrow, nearly cylindrical 



Trypanosyllis sp. C, p. 30-95 



Trypanosyllis vittigera Ehlers, 1887 

 Figures 30-81, 82a-h 



Trypanosyllis vittigera Ehlers, 1887:151, pi. 40, figs. 1-3. 

 Trypanosyllis vittigera — Treadwell, 1924:10. 

 Trypanosyllis vittigera — Hartman, 1951a:41. 



MATERIAL EXAMINED: 

 Gulf of Mexico BLM-0CS: 



MAFLA 2211F-7/76 (1 spec), 2211H-7/76 (1 spec), 22L1E-8/77 (1 spec), 

 2528-11/77 (1 spec, USNM 55838), 2528G-2/78 (1 spec). 

 Supplementary Material: 



Florida — Conch Key, intertidal under rocks, H. Wilson coll., S. Gardiner 

 ID. (1 spec, USNM 53741). 

 DESCRIPTION: 



Length, 34.0+ mm (previously reported to 13.5 mm); width, to 2.8 mm 

 (previously reported to 2.5 ma). Body long, broad, flattened; with two 

 dorsal transverse brown stripes per segment anteriorly, dorsal cirri 

 uncolored to purplish-brown. One small complete specimen with 39 seti- 

 gers. Prostomiura wide anteriorly, bilobed posteriorly, nuchal ridges 

 separated by middorsal cleft (Figure 30-82a); with four large, dark, 

 lentigerous eyes, with or without two faint eyespots near bases of 

 lateral antennae. Antennae arising at anterior border of prostomium. 

 Palps well-separated, triangular, distally blunt. Antennae, tentacular 

 and dorsal cirri long, number of articles generally increasing with size 

 of specimen. Dorsal cirri alternating in length. Ventral cirri digiti- 

 form, extending beyond parapodia. Anal cirri paired, with 6-7 articles 

 on small complete specimens. Composite falcigers with minutely serrate, 

 bidentate blades (Figure 30-82b-e). Superior simple seta hairlike (Fig- 

 ure 30-82f), present only on far posterior setigers. Inferior simple 

 seta slender, bidentate (Figure 30-82g), present posteriorly. Acicula 

 stout, emergent, numbering 4-5 anteriorly, 1-2 posteriorly. Pharynx 

 with terminal trepan of ten large, triangular teeth (Figure 30-82h), 

 additional middorsal tooth absent. Pharynx located in setigers 2-6 in 

 two small specimens; proventricle extending from setigers 6-7 to 10-11. 

 Proventricle 2-3 times longer than wide, and up to 1.5 times longer than 

 pharynx; with 28-38 muscle cell rows. 



REMARKS: Specimens in the BLM-MAFLA collections originally identified 

 as Trypanosyllis zebra are herein referred to J_. vittigera. 

 PREVIOUSLY REPORTED HABITAT: Intertidal to 13 m, under rocks. 

 GULF OF MEXICO BLM-0CS OCCURRENCE: Fairly common in northeastern Gulf 

 (Figure 30-81); 14-43 m; coarse to fine-very fine sand, silty fine sand. 

 DISTRIBUTION: West Indies, southern Florida, Gulf of Mexico. 



30-88 



