74 BULLETIN OF THE 
than in that species immediately surrounding the anal opening, as in 4. tonsum, 
but much smaller. 
The primary spines are also proportionally longer and more slender, more as in 
A. tonsum, but with the proportionally bare intertubercular spaces characteristic of 
A. microtuberculatum. When alive this species is of a light violet or grayish 
pink, with spines of the same tint. 
Station 108. 994 fathoms. Off Nuevitas. 
“lll d200 E Lat. 19? 7° N., Long. 74° 52 W. 
ns 60; 451 e Off Frederickstadt, 
‘101140, «1097. i * Virgin Gorda. 
Dg 784 da * Guadeloupe. 
Ms AO dE USD H oe 
LIIS ida 611 e * Dominica. 
ee dud. 578 e * $t. Vincent. 
Aspidodiadema Jacobyi A. Ac. n. sp. 
This is the largest species of the genus; it is intermediate between 4. tonsum 
and À. microtuberculatum, having comparatively stout spines, slightly curved as 
in the latter species, but having the more numerous coronal plates of the former 
species and its larger primary ambulacral tubercles with more closely packed 
primaries. 
The anal system is protected near the anal opening with six plates (five large, 
one small), as in À. tonsum ; they cover but a small part of the centre of the anal 
system. The color of this species is either a greenish chocolate, with same color 
extending along base of shaft of the white spines, or of a lighter dirty yellowish 
green. The largest specimen collected measured over an inch in diameter, 
Station 134. 948 fathoms. Off Santa Cruz. 
ff 46 245 Vi fF Sth Kitts: 
** 148, 908 E i ide 
LU Jin 95 dj * St. Vincent. 
๒ 0 OU 221 ns * Barbados. 
"s v. (Bartlett) 288 i * Santiago de Cuba. 
II 297 i * Cayman Brac, 
Asthenosoma hystrix A. Ac. 
This species is globular in outline when alive, but slightly depressed on the 
actinal side, varying from a dark claret to a grayish pink color. 
Station 132, 115 fathoms. Off Santa Cruz. 
CY I 103 En “Barbados. 
cé 294, 137 ec ec ec 
MIO der MET. eai. 
299. 140 
