aciculum. Neurosetae with hooked tips and an indistinct, slender, 

 secondary tooth (Figure 29-14d); shorter neurosetae medially expanded 

 with more distinctly serrate margin (Figure 29-14e). Posterior end with 

 two achaetous preanal segments, followed by papillose pygidium (Figure 

 29-14f) bearing a pair of papillose anal cirri. 



REMARKS: The two Gulf of Mexico BLM-OCS specimens are probably juve- 

 niles; however, they match quite well the original description of A. 

 carolinensis . 



PREVIOUSLY REPORTED HABITAT: Sand mixed with gravel and shell frag- 

 ments. 



GULF OF MEXICO BLM-OCS OCCURRENCE: Off Florida (Figure 29-13); 19-43 m; 

 coarse sand, silty fine sand. 

 DISTRIBUTION: North Carolina, Gulf of Mexico. 



Ancistrosyllis sp. C 



Figures 29-15, 16a-h 



MATERIAL EXAMINED: 

 Gulf of Mexico BLM-OCS: 



SOFLA 2D-11/80 (1 spec, USNM 86933), 20-11/80 (1 spec, USNM 

 86934); MAFLA 2316J-7/76 (1 spec), 2318E-7/76 (2 spec), 2318E-11/77 (1 

 spec), 27481-2/78 (1 spec, USNM 86931), 2748K-2/78 (1 spec, USNM 

 86932). 

 DESCRIPTION: 



Length, 23+ mm; width, to 0.80 mm. Largest specimen incomplete with 

 about 100 setigers. Prostomium (Figure 29-16a) with minute lateral 

 antennae; median antenna absent. Palps with small papillose palpo- 

 styles. Tentacular cirri equal in length to dorsal cirri. Dorsal cirri 

 of setiger 1 similar in length to subsequent dorsal cirri. Ventral 

 cirri longer than dorsal cirri (Figure 29-16b), present from setiger 3. 

 Prostomium and anterior segments sparsely papillose. Hooked acicular 

 notosetae beginning on setiger 6, accompanied by single notoaciculum 

 (Figure 29-16b). Neurosetae with curved tips and thin secondary tooth 

 (Figure 29-16c-f). Middle and posterior setigers additionally with 2-3 

 larger lower neurosetae (Figure 29-16g). Posterior end with 3-5 achae- 

 tous segments; pygidium (Figure 29-16h) with few papillae and a pair of 

 anal cirri. Proboscis sac-like, without papillae basally (Figure 29- 

 16a); distal end not examined. 



REMARKS: Ancistrosyllis sp. C is similar to A. hamata (Hartman, 1960) 

 and A. carolinensis Gardiner, 1976. It differs from the former in 

 having smaller lateral antennae and longer ventral cirri, and from the 

 latter in having ventral cirri from setiger 2 instead of setiger 3. 

 GULF OF MEXICO BLM-OCS OCCURRENCE: Off Florida (Figure 29-15); 20-50 m; 

 coarse to medium sand, silty fine sand. 



Ancistrosyllis jonesi Pettibone, 1966 

 Figures 29-17, 18a-g 



Ancistrosyllis jonesi Pettibone, 1966:173, figs. 9a-d, lOa-e. 

 Ancistrosyllis jonesi — Gardiner, 1976:124, fig. 9 l-o. 



29-19 



