lb. Neurosetae slender, serrate, minutely bifid (Figure 29-30e), not 

 modified Synelmis klatti, p. 29-32 



2a. Modified neurosetae furcate (Figure 29-32e) 3 



2b. 'lodified neurosetae otherwise (Figures 29-36d, 38i) 4 



\a. Longer tine of furcate setae with entire tip (Figure 29-32e); 



dorsal and ventral cirri foliaceous with acuminate tips (Figure 



29-32c) Synelmis cf. albini, p. 29-35 



3b. Longer tine of furcate setae with bifid tip (Figure 29-34d); 



dorsal and ventral cirri slender, filiform (Figure 29-34c). . . . 



Synelmis sp. A, p. 29-35 



4a. Modified neurosetae as smooth spines with blunt tips (Figure 29- 

 36d) Synelmis sp. B, p. 29-37 



4b. Modified neurosetae as dentate spines with truncate or acuminate 

 tips (Figure 29-38g-j) Synelmis sp. C, p. 29-39 



Synelmis klatti (Friedrich, 1951) 

 Figures 29-29, 30a-f 



Glyphohesione klatti Friedrich, 1951:171, figs. 1, 2. 



Ancistrosyllis klatti — Eliason, 1962b:29, fig. 3. 



Synelmis klatti — Pettibone, 1966:191. 



Synelmis klatti — Pearson, 1970:74, fig. 2b, c. 



Synelmis klatti — Hartmann-Schroder, 1971:144, fig. 49a-e. 



MATERIAL EXAMINED: 

 Gulf of Mexico BLM-OCS: 



SO FLA 20 C- 11/80 (3 spec, USNM 86986), 20 A- 4/81 (1 spec, USNM 

 86985), 20E-8/81 (1 spec, USNM 86987); MAFLA 2316C-11/77 (2 spec), 

 2313D-7/76 (3 spec), 2422J-6/76 (2 spec), 25311-8/77 (1 spec.-ovig., 

 USNM 86983), 2536F-7/76 (1 spec, USNM 86984), 2640-11/77 (1 spec), 

 28553-3/77 (1 spec). 

 DESCRIPTION: 



Length, 12.0+ mm (previously reported to 13 ram); width, to 0.5 mm. 

 Largest specimen incomplete with 53 setigers. Prostoinium (Figure 29- 

 30a, b) with three long, filiform antennae, all similar in length. Eyes 

 present. Palps with long, riliform palpostyles. Paired pigment patches 

 along posterior dorsal margin of prostomium (Figure 29-30a). Dorsal and 

 ventral tentacular cirri long, slender, equal in length, about twice as 

 long as antennae (Figure 29-30b). Dorsal cirri of setiger 1 up to twice 

 as long as following ones; ventral cirri shorter (Figure 29-30c), pres- 

 ent throughout. Body with smooth integument. Notopodial spines (Figure 

 29-30d) beginning on setigers 10-15, accompanied by slender aciculum 

 (Figure 29-30c). Neurosetae long to short, serrate, with minutely bifid 

 tips (Figure 29-30e). Pygidium (Figure 29-30f) with pair of long, 

 filiform anal cirri. 



UIK.S: The length of the first pair of dorsal cirri in specimens 

 L.isd ranged from equal to twice that of the following dorsal cirri. 

 Synelmis klatti has not previously been described as having bifid neuro- 

 setae; however, this feature is easily overlooked. 

 PREVIOUSLY REPORTED HABITAT: Mud to sandy mud; 11-680 m. 

 GULF OF MEXICO BLM-OCS OCCURRENCE: Off Florida and Alabama (Figure 29- 



29-32 



