190 



PROCEEDINGS OF THE NATIONAL MUSEUM 



notoseta in posterior segments (figs. lSd,e). Dorsal cirri large, 

 flattened, leaflike, wide basally, tapering distally, extending beyond 

 neuropodial lobes. Neuropodium conical with neuroaciculum and 

 numerous silky neurosetae. Neurosetae simple, shorter and coarsely 

 spinous to longer and faintly spinous, all tapering to capillary tips. 

 Ventral cirri beginning on se tiger 1, present on all se tigers, subulate, 

 slightly shorter than dorsal cirri. Pygidimn with 2 long anal cirri. 

 Proboscis cylindrical, with indefinite papillae around opening and with 

 irregular papillated area basally. 



Remarks: ♦S'. wassi superficially resembles the figures given for 

 Otopsis longipes Ditlevsen, both being large, flattened, with integument 

 wrinkled and folded, with dorsal and ventral cirri large, lamelliform 

 and with numerous capillary setae. They differ in the following 

 characters : 



Otopsis longipes Ditlevsen 



Segment I: Tentacular segment achaetous, 



with 2 pairs of subeqiial 



tentacular cirri 

 Segment II: Second tentacular segment 



achaetous with 1 pair of 



tentacular cirri 

 Segment III: First setigerous segment with 



dorsal and ventral cirri 

 Notopodia: With 2 notoacicula, without 



notosetae 



Sigambra wassi, new species 



Same 



First setigerous segment 

 with long dorsal cirri and 

 shorter ventral cii'ri 



Second setigerous segment 



With single notoaciculum 

 and emergent hooked 

 notoseta beginning on 

 setiger 23-31 



S. wassi differs from the other species of Sigambra as indicated in 

 the key on page 181. 



Distribution: Chesapeake Bay, Va. In 6-7 fms. 



Genus Synelmis Chamberlin, 1919 



Sijnelmis Chamberlin, 1919. [Type-species: S. simplex Chamberlin, 1919, by 



original designation and monotypy; =S. albini (Langerhans, 1881). Gender: 



neuter.] 

 Kynephorus Ehlers, 1920. [Type-species: K. inermis Ehlers, 1920, by mono- 



typy; =5. albini (Langerhans, 1881). Geiider: masculine.] 

 Glyphohesione Friedrich, 1950. [Type-species: G. klatti Friedrich, 1950, by 



monotypy. Gender: feminine.] 

 Diagnosis: Body long, subcylindrical, stiff, wiry, with lateral 

 parapodia sharply marked off from body. Prostomium small, with 

 paired biarticulate palps, 3 antennae. Tentacular segment achaetous, 

 with 2 pahs of tentacular chri. Parapodia subbiramous. Notopodia 

 with notoacicula and stout, emergent, straight or slightly curved, 



