144 
11. Rathbun — List of the Brazilian Echinoderms. 
of boring into many different kinds of rocks, which are sometimes so 
completely riddled with its holes, that they yield readily to the force 
of the waves. It is edible, and contributes to the support of the 
poor fishermen of the coast, where it occurs (Hartt). 
S. Carolina — Florida; West Indies; Aspinwall ; Cumaua; Ber- 
mudas; Cape Verde Isles (A. Ag.). 
Strongylocentrotus G-aimardi (Blainv.) A. Agassiz. 
Illust. Cat. Mus. Comp. Zool., No. VII, p. 163, 1872. 
Brazil (Jardin de Plantes; Hartt and Copeland, Thayer Exp.). 
Bahia; Rio de Janeiro (Mus. Copenhagen). Desterro (F. Muller). 
Toxopneustes variegatus (Lam.) A. Agass. 
Illust. Cat., No. VII, p. 168, 1872. 
Lytechinus variegatus A. Agassiz, Bull. Mus. Comp. Zool., p. 24, 1863; Verrill, 
Trans. Conn. Acad., i, p. 369, 1868. 
Fernando de Noronha (Branner). Pernambuco (Geol. Comm.). 
Bay of Bahia, common (Ilartt, ’67; Rathbun). Porto Seguro ; 
Victoria; Armagao; Cape Frio (Hartt, Thayer Exp.). Alcobaga, 
Bahia (Max. zu Neu Wied). Bay of Rio de Janeiro (Agassiz; 
Rathbun). N. Carolina — Florida; W. Indies; Gulf of Mexico; Ber- 
mudas (A. Ag.). This species is said not to be edible (Neu Wied). 
Hipponoe esculeilta (Leske) A. Agass. 
Illust. Cat., No. VII, p. 135, 1872. 
Tripneustes ventricosus Agassiz, Int. Mon. Scut., 1841. 
Fernando de Noronha, abundant and of large size; Rio Formoso, 
common and large (Branner). Florida; West Indies; Yucatan; 
Cutnana ; Surinam; Bermudas (A. Ag.). 
Clypeaster subdepressus (Gray) Agass. 
Prod., p. 187, 1836; A. Agass., Illust. Cat., No. VII, p. 101, 1872. 
Bay of Bahia, not uncommon on sandy bottoms, and often attain- 
ing a large size (Rathbun). Brazil (Castelneau). S. Carolina — Florida ; 
West Indies; west coast of Africa (A. Ag.). 
Mellita sexforis (Lamk.) A. Agass. 
Illust. Cat., No. VII, p. 141, 1872. 
Pernambuco (O. A. Derby, 1870, in Mus. Yale Coll.). Bay of Rio 
de Janeiro, very abundant near Fort Yillegagnon, on sandy bottom 
