26 



K. :mitruküri : studies on 



Genus Bathyplotes Östergren 1890. 



7. Bathyplotes golflen-hinilif sp. n. 



(PI. n., figs. 16—17; textfio-, G). 

 Specimens examined : — 



Description : — This beautiful and striking holothurian is given 

 in natural color and size in PI. 11., figs. 10 — 17. Tlie body is 

 subcylindrical ; dorsum convex and ventrum flat. In active life 

 there is probably some slight marginal border ; when the sketch 

 was made this 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 tlie whole body. 

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

 largest being about 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 



