JR. Rathbun — List of the Brazilian Echinoderms. 
143 
ECHINOIDEA. 
Cidaris tribuloides (Lam.) Biainv. 
Diet. S. Nat., p. 200, 1830 ; A. Agassiz, Illust. Cat. Mus. Comp. Zoology, No. YII, 
p. 99, 1872. 
Cidaris annulata A. Agass., Bull. Mus. Comp. Zool., p. 17, 1863. 
Fernando de Noronba, very abundant (Branner). Bay of Bahia, a 
few fragments dredged in about four fathoms (Rathbun). Rio de 
Janeiro (Mus. Copenhagen). S. Carolina — Florida; West Indies; 
Gulf of Mexico; Aspinwall; Cape Verde Isis. (A. A g.). 
Arbacia pustulosa (Leske) Gray. 
Proc. Zool. Soc. Londou, April. 1835; A. Agass., Illust. Cat., No. YII, p. 92, 1872. 
Arma 9 ao and Ilhas de Maricas, Prov. of Rio de Janeiro (Hartt, 
Thayer Exp.). Rio de Janeiro, common about entrance to Bay, etc. 
(Agassiz, Thayer Exp.; Rathbun). Desterro, Prov. of Santa Cath- 
arina (F. Muller). Azores; Madeira; Cape Verde Isis.; west coast 
of Africa; Mediterranean (A. Ag.). 
Diadema setosum Gray. 
Ann. Phil., p. 4, 1825 ( setosa ); A. Agass., Illust. Cat., No. YII, p. 103, 1872. 
Fernando de Noronha, abundant (Branner). The distribution of 
this species is nearly world-wide. West Indies; Gulf of Mexico; 
Carribbean Sea; Atlantic, Pacific and Indian oceans; mostly con- 
fined within the tropics (A. Ag.). 
Echinometra subangu laris (Leske) Desmi. 
Syn., p. 266, 1837 ; A. Agass., Illust. Cat., No. YII, p. 1 16, 1872. 
Echinometra Michelini Desor, Catal. Rais., 1846; A. Agass., Bull. Mus. Comp. 
Zoology, p. 21, 1863; Verrill, Trans. Conn. Acad., i, p. 369, 1868. 
Fernando de Noronha (Branner). Pernambuco, boring into the 
sandstone reef, etc. (Geol. Comm.). Island of Santo Aleixo, Pernam- 
buco, boring into trap rock (Branner). Bay of Bahia, very abundant, 
boring into coral reef, conglomerate, gneiss, etc. (Geol. Comm.) Porto 
Seguro; Victoria; Guarapary ; Campos; Ilhas de Maricas (Hartt and 
Copeland, Thayer Exp.). Abrolhos Islands (Hartt, 1807; Rathbun). 
Rio de Janeiro (Agassiz; Geol. Comm.). Desterro (F. M tiller). 
This species lias been found on nearly all the rocky shores of the 
coast of Brazil, from Pernambuco to Santa Catharina, and probably 
also ranges to the north and south of these points. It has the power 
