setigers 1-2 with neurosetae only. Notosetae short, slender. Notoacic- 

 ijli gradually emerging and enlarging after setigers 2-9. Neurosetae 

 spinous, tapering to fine tips. Pygidium plate-like, smooth, with one 

 to several short cirri. Integument smooth or areolated, not papillose. 



Parandalia sp. A 

 Figures 29-27, 28a-d 



MATERIAL EXAMINED: 



Gulf of Mexico BLM-OCS: 



•1AFLA 24231-2/78 (1 spec, USNM 86953); CTGLF 04-5/78 (1 spec, USNM 



36957), 04-9/78 (1 spec, USNM 86956); STOCS 5B3-2 Sp/76 (2 spec, USNM 



•55), HRl-l 'W/75 (1 spec, USNM 86954). 

 INSCRIPTION: 



length, 20+ mm; width, to 0.50 mm. Largest specimen incomplete with 51 

 setigers. Prostomium (Figure 29-28a) without appendages or eyespots. 

 Palps biarticulate with eversible palpostyles. Dorsal cirri absent. 

 Ventral cirri beginning on setiger 4. Notopodia beginning on setiger 2, 

 as small pipilliform lobes (Figure 29-28a), each bearing 1-3 short, 

 slender, spinous simple setae (Figure 29-28a) and an internal aciculum. 

 >iotoacicula gradually becoming stouter and emergent around setiger 7 

 (Figure 29-28b). Neurosetae spinous, numbering about nine per para- 

 podium (Figure 29-28b,c). Anal plaque smooth and convex dorsally, con- 

 cave centrally with one medial and two lateral cirri (Figure 29-23d). 

 REMARKS: P arandalia sp. A is similar to P. americana (Hartman, 1947b) 

 in having notosetae from setiger 2. It differs from the latter in that 

 the ventral cirri begin on setiger 4 instead of setiger 6, and the 

 notoacicnla ice emergent from setiger 7 instead of setiger 2. P_. 

 am ericana also has 15 or more neurosetae per parapodium, arranged in 

 five or six discrete groups, whereas Parandal ia sp. A has about 9-10 

 leurosetae per parapodium, arranged in supra- and subacicular groups 

 (Figure 29-23b). 



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

 (Figure 29-27); 19-82 m; silty fine sand, clayey silt. 



Genus Synelmis Chamberlin, 1919b 



TYPE SPECIES: Synelm is s implex Chiuberlin, 1919b. 

 IfiP iRENCE: 



eettibone, 1966:190. 



DIAGNOSIS: Palps not fused; palpostyles present. Three antennae pres- 

 ent, usually quite small. Two pairs of tentacilir cirri present. Acic- 

 ular notosetae straight or slightly curved. Neurosetae including 

 smooth, straight acicular spines or spines with teeth or serrations; 

 f i:-;ate setae; and serrate setae tip -ring to en t ire or minutely bifid 

 tips. Pygidiu a not papillose, with a pair ')f long, slender anal cirri. 

 Body rounded in cr iss-section, with smooth, iridescent integument. 



Key to the Gulf of Mexico BLM-OCS Species of Synelmis 



Some neurosetae modified (e.g., as furcate setae or spines; Fig- 

 ures 29-32e; 36d; 3Si,j) '. 



29-30 



