60 
CATALOGUE OF ECHINIDA. 
Schizaster, Agassiz , Prod . ; Agasssiz dc Desor, Ann. JSci. Nat. 
series 3, yin. 1847, 20, vi. 1846, t. 16, f. 6. 
Micraster, sp., Agassiz , Prod. 184. 
Spatangus, b. and c., Blainv. D. S. N. lx. 183. 
* Odd anterior ambulacra , in a very deep groove; ovaricd pores 
tvjo ; front lateral ambulacra very close to the odd anterior one; 
hinder lateral ambulacra one-third the length of the anterior 
pair. — Nina. 
Ovum, Blainv. D.S.N. lx. 154. 
Ova, Gray , Ann. Phil. 1825 ; Blainv. 
1. SCHIZASTER CANALIFERUS. 
The upper part of the hinder end rather produced behind 
over the vent, rather more raised in the middle ; the hinder 
part of the peripetalous fasciole straight between the two late- 
ral ambulacra. 
Spatangus, LesJceap. Klein , t. 27. f. a.\ Gualt. 1 . 109, f. c.; Scylla. 
t. 25, f. 2. 
Echinus lacunosus, var. a. and b., Gmelin , S. N. 3196. 
Oursin lacuneux, Bose. D. H. N. xxiv. 282. 
Spatangus canaliferus, Lamk. Hist. iii. 327 ; E. M. 1. 136, f. 1-3 ; 
Deslong, E. M. ii. 688 : Blainv. Zooph. 202 ; Desmoul. Echin. 
386. 
Spatangus micraster canaliferus, Philippi , Erich. Arch. 1845, 
35!. 
Schizaster canaliferus, Agassiz dc Desor , 1. c. 20, vi. t. 16, f. 6. 
Micraster canaliferus, Agassiz , Prod. 184. 
Ova canalifera, Gray, Ann. Phil. 1825, 9. 
Hab. Mediterranean. 
a. Large, without spines. Mediterranean. 
b. Smaller, covered with spines. Sicily. Presented by # 
J. E. Gray, Esq. 
2. Schizaster ventricosus. _ 
Hinder part of the body very high ; hinder end nearly ver- 
tical, ventricose, regularly rounded above over the vent ; the 
hinder part of the peripetalous fasciole straight between the two 
lateral ambulacra. 
% Rumphius Amb. t. 14, f. 2. 
? Echinus lacunosus, part., Gmelin , Syst. Nat. 
Spatangus canaliferus, part., Ldrnlc. Hist. ii. 11. 
Schizaster ventricosus, Gray , Ann. <k Mag. N.H. 1851. 
Hab. Australia. 
a. Partly covered with spines ; upper part broken. Australia. 
