MUSEUM OF COMPARATIVE ZOOLOGY. TAL 
Station 319. 262 fathoms. Lat. 322 95' 0" N., Long. 77° 42’ 30" W. 
i 320. 257 Y Na ร WS. 
* — xxii (Bartlett)* 250 T tos dst dy Na O พ ร OL W: 
Porocidaris Sharreri A. Ac. n. sp. 
This is a larger species than either of the recent ones thus far known, The 
only two large individuals collected are males. A small female measuring slightly 
over an inch in diameter, shows that, as in P. elegans, the genital openings are 
placed within the genital plates. The abactinal system, which is but sparsely 
covered by papillæ, is remarkable for the comparatively larger size of the anal 
system than in the other species of the genus, and for the elongate genital and 
ocular plates. 
The primary radioles are smooth, and uniformly tapering in one of the speci- 
mens, which is of a light greenish pink color when alive; the spines are white, 
with a delicate brownish pink base. In the other large specimen they vary 
greatly in shape, from the peculiar serrated short, flattened spines surrounding the 
actinostome characteristic of this genus to long slender cylindrical spines, straight, 
or sometimes slightly curved, equalling in length twice the diameter of the test, 
and finely fluted for the whole length, or the shorter radioles gradually becoming 
thicker towards the tip, with coarser fluting, and. we find some spines with 
slightly eupuliform tips, as in Goniocidaris. — The largest specimen measures fully 
three inches in diameter. 
Station 151. 356 fathoms. Off Nevis. 
ก ไอ้ ผิ ว 199 s * St, Kitts. 
e o QU (A 123 y * Barbados. 
Salenia varispina A. Ae. 
A large number of specimens of this species, in all stages of growth, were 
collected by the “Blake” during the season 1878-79. 
Station 108. 994 fathoms. Off Nuevitas. 
5 Ll 1200 g Lat. 19? 7' N., Long. 74° 59' W. 
yy 181. 580 H Off Santa Cruz. 
A 185. 450 ih d à 
y 136. 508 ud js x: 
Sonn] ave 1097 * Virgin Gorda. 
xL 176. 611 ee “ Dominica. 
is 188. 379 se e เม 
A 190. 542 £t M 8 
tero OR. 476 à ‘ Martinique. 
* A few stations marked (Bartlett) were occupied by COMMANDER BARTLETT 
during the winter of 1879-80, while surveying in the “ Blake” the western part of 
the Caribbean. 
