ECHINOIDEA. 
ASTHENOSOMA. 
AstHENnosoma, Grube, 1867, Jahresb. d. Schles. Ges. f. Vat. Cult. ; 
A, Agass., Rev. Ech., iii, p. 422; id. Voy. Chall., i", 
p. 82, 1881. 
(Not represented.) 
Hab. China Seas. 
PHORMOSOMA. 
Wyville Thomson, 1874, Ech. Porcup., Trans. 
PHORMOSOMA, 
ol. elxiv., Pt. 2, p. 7382; dA. Agass., Voy. 
Roy. Soe., 
Chall., iii., p. 91. 
(Not represented. ) 
ECHINOMETRADZ. 
EcHInoMetTraDa, Gray, P. Z. S., Lon., 1855, p. 87; A. Agass., 
Rev. Ech., ii., p. 4238. 
COLOBOCENTROTUS. 
CotosocentTRotTUs, Brandt, 1835, Prod. Des. An. 
COLOBOCENTROTUS ATRATUS. 
Echinus atratus, Linn. Syst. Nat., 1758. 
Colobocentrotus atratus, Brandt, Prod. Des. An., 1835; A. Agass., 
Rev. Ech., i1., p. 424. 
(a, b) Mauritius - 
(c) Half denuded of spines, Mauritius - a Dest 
- Exch. 
(d, e) Sandwich Island - 
Hab. Mauritius ; East Coast of Africa ; 
Java ; Sandwich 
Islands. 
HETEROCENTROTUS. 
HeterocentTrotvs, Brandt, 1835, Prod. Des. An. 
