K. MITSUKUrvi : STUDIES OX 



Description ; — Tentacles 25. Dorsal surface convex with a 

 few pedicels ; ventral surface Hat w^itli numerous pedicels. In the 

 dorsal integument longer and shorter calcareous rods with small 

 processes running out from the sides, and with the ends spinous, 

 or more or less distinctly dichotomous ; in the ventral perisome 

 small, smooth, oval grains and larger, smooth, unbranched rods 

 with slightly rough ends ; in the muscles and in all the viscera 

 small smooth rods. Poliaii vesicle single. Stone-canal attached 

 to th.e mesentery. In the calcareous ring the four- pointed radialia 

 are often enlarged at the expense of the two-pointed inter- 

 radialia. 



Remarks: — The largest alcoholic specimens measured 15x4 

 cm. or 15x5 cm. Color in alcohol chocolate brown to black on 

 the dorsal surface ; much lighter on the ventral. Bases of the dorsal 

 papillae very frequently surrounded by white ring. in some 



