MATERIAL EXAMINED: 

 Gulf of Mexico BLM-OCS: 



SOFLA 16F-11/80 (1 spec, USNM 86917); MAFLA 2211H-6/76 (1 spec), 

 2211H-11/77 (1 spec), 2211G-2/78 (1 spec, USNM 86916); CTGLF 02-5/78 

 (1 spec, USNM 86920); STOCS 4/1-5 Sp/76 (1 spec, USNM 86918), 1/II-4 

 Sp/76 (1 spec, USNM 86919). 

 DESCRIPTION: 



Length, to 10 mm (previously reported to 16 mm); width, to 0.70 mm 

 (previously reported to 1.5 mm). Largest complete specimen with 49 

 setigers and four achaetous preanal segments. Prostomium (Figure 29- 

 18a) with well-developed lateral antennae, equal in length to dorsal 

 cirri of setiger 1; median antenna smaller, papillose. Palps with small 

 palpostyles, not visible dorsally. Dorsal and ventral tentacular cirri 

 similar in length. Dorsal cirri conical, those of setiger 1 slightly 

 longer than following ones. Ventral cirri (Figure 29-18b) present from 

 setiger 3, equal in length to dorsal cirri. Prostomium and body moder- 

 ately papillose dorsally, smooth ventrally. Hooked acicular notosetae 

 beginning on setiger 6, accompanied by internal aciculum (Figure 29- 

 18b). Neurosetae long (Figure 29-18c,d) to short (Figure 29-18e,f), 

 with curved tips and slender secondary tooth; shorter neurosetae dis- 

 tinctly toothed along one margin. Posterior end with 3-4 achaetous 

 preanal segments. Pygidium (Figure 29-18g) with few large papillae dor- 

 sally and a pair of anal cirri. 



REMARKS: Among the material examined, several specimens possessed 

 shorter appendages, particularly the lateral antennae, than those shown 

 for Figure 29-18a and b; however, the degree of papillation and the 

 presence of a median antenna were identical, making the identification 

 to A. jonesi certain. 



PREVIOUSLY REPORTED HABITAT: Intertidal to 15 m; mud. 



GULF OF MEXICO BLM-OCS OCCURRENCE: Off Florida, Louisiana, and Texas 

 (Figure 29-17); 10-54 m; coarse to fine sand, clayey sand, sandy clayey 

 silt, sandy silty clay. 

 DISTRIBUTION: Chesapeake Bay, North Carolina, Gulf of Mexico. 



Ancistrosyllis papillosa (Jones, 1961) 

 Figures 29-19, 20a-i 



Ancistargis papillosus Jones, 1961:2, figs. 1-14. 

 Ancistrosyllis papillosa — Pettibone, 1966:170, fig. 6a-e. 



MATERIAL EXAMINED: 



Gulf of Mexico BLM-OCS: 



CTGLF 02-5/78 (2 spec, USNM 86923); STOCS 4/1-3 5/76 (1 spec, USNM 



86921), 1/IV-6 5/76 (1 spec, USNM 86922). 



Supplementary Material: 



Florida — Alligator Harbor (AMNH 3602, 1 paratype). 



DESCRIPTION: 



Length, to 16 mm (previously reported to 10 ram); width, to 0.80 mm 



(previously reported to 0.5 mm). Largest specimen complete with 58 



setigers and three achaetous preanal segments. Prostomium (Figure 29- 



20a) with a pair of small ventral eyespots which may be faded. Lateral 



antennae extending to anterior margin of palps; median antenna minute 



(Figure 29-20a), about twice the length of adjacent papillae (Figure 29- 



20b). Palps with well-developed palpostyles. Dorsal cirri about as 



29-22 



