26 



K. MITRUKUm : STUDIES OX 



Gonns Bathyplotes (Jstergrex 1890. 



7. Jiafhj/plofrs (folfleu-hludi, sp. n. 



(ri. n., %s. IG— 17; fa^xtfig. G). 

 Specimens examined : — 



Description : — This beautiful and striking liolotlmrian is given 

 in natural color and size in Pi. II., figs. 16 — 17. The body is 

 subcylindrieal ; dorsum convex and ventrum flat. In active life 

 there is probably some slight marginal border ; when the sketch 

 ■was made tliis was no longer well-marked except at the anterior 

 and posterior ends, but its place was marked by a single series 

 of large transparent papillae which went around the whole body. 

 These papillae were of about the size given in the figures, the 

 largest being about 6 mm. in height. At the time of capture, all 

 were larger and are said to have made a beautiful row. The series 

 went anteriorly dorsal to the mouth and posteriorly ventral to the 

 anus. At a little over one-fifth of the entire body length from 

 the anterior end, the body was on the sides slightly constricted 

 as in a neck, separating the anterior head-like portion from the 

 rest of the body. This did not seem like a temporary constric- 

 tion produced by contraction of the circular muscles, but to 



