MUSEUM OF COMPARATIVE ZOOLOGY. 83 



Spatangois purpiireus Leske. 



A large number of dead tests and t'ragiiients of this species were found, but 

 no live specimens. 



Hemiaster Mentzi A. Ac. n. sp. 



A few specimens of this small globular species were collected. It differs 

 strikingly from the other species of the genus by the small, narrow comparatively 

 elongate space included within the peripetalous fasciole. 



Agassizia excentrica A. Ag. 



Fragments of this species show that it attains a size of nearly two inches in 

 length. An excellent series of some of the younger stages is found in the col- 

 lection of this season. 



