i?. Mathbun — List of the Brazilian Echinoclerms. 143 



ECHINOIDEA. 

 Cidaris tribuloides (Lam.) Biainv. 



Diet. S. Nat., p. 200, 1830 ; A. Agassiz, Illust. Cat. Mus. Comp. Zoology, No. VII, 



p. 99, 1872. 

 Cidaris cmnulata A. Agass., Bull. Mus. Comp. Zool., p. 17, 1863. 



Fernando de Noronha, 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 Isls. (A. Ag.). 



Arbacia pUStulOSa (Leske) Gray. 



Proc. Zool. Soc. Londou, April, 1835; A. Agass., Illust. Cat., No. VII, p. 92, 1872. 



Arma9ao and Ilhas de Maricas, Prov. of Rio de Janeiro (Hartt, 

 Thayer Exp.). Rio de Janeiio, common about entrance to Bay, etc. 

 (Agassiz, Thayer Exp.; Rathbun). Desterro, Prov. of Santa Cath- 

 arina (F. Miiller), Azores; Madeira; Cape Verde Isls.; 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 subangularis (Leske) Desmi. 



Syn., p. 266, 1837 ; A. Agass., Illust. Cat., No. VIL p. 116, 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. (Geo!. 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, 1867; Rathbun), 

 Rio de Janeiro (Agassiz ; Geol, Comm.), Desterro {¥. Miiller). 



This species has 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 



