90 



K. MITSUKURI : STUDIES ON 



Dcscrqytion : — Tentacles 20, with branches given off not only 

 at the top but sometimes somewhat lower down, approaching 

 in appearance those of a dendrocliirote form. 



Color reddish brown to blackish brown ; ventrum mostly 

 lighter than dorsum. Often small hght spots on the dorsum 

 corresponding to papilla\ Tentacles often black. 



Very numerous pedicels on the ventrum ; sparsely scattered 

 papillae on the dorsum. In well preserved specimens (No. 1267), 

 pedicels in the three ventral, and papillae in the two dorsal am- 

 bulacral, zones. End-plates of pedicels large (0.8 mm.) same of 

 papilla} very small and imperfect. 



Eadiaha of calcareous ring very large compared with the 

 interradiaha. Polian vesicle single, in the left ventral inter- 



