148 
JR. Rathbun — List of the Brazilian Echinoderms. 
nambuco in 1870, by Mr. O. A. Derby, and contained in the Museum 
of Yale College, approaches more closely to this than any other de- 
scribed species. Its greatest diameter is about 120 mm , and it has more 
slender and gradually tapering arms than typical specimens of E. 
sentus. The spines are slightly longer than usual in this species, and 
number about eighteen in each of the upper median rows from the 
center of the disk to the tip of the arm. At Rio Formoso, Pernam- 
buco (Branner) were found young individuals of this same variety, 
associated with more typical specimens of E. sentus. Florida; Hayti 
(Yerrill). West Indies (Mus. Yale Coll.). 
Echinaster Braziliensis Mull, and Trosch. 
Syst. der Asterid., p. 22, 1842. 
I have seen only a single specimen that could be referred to this 
species, as originally described by Muller and Troschel; it was from 
Rio Formoso, Pernambuco (Branner). Greatest diameter about 80 mm , 
arms quite slender, spines very small and arranged in about 
nine longitudinal rows, the upper median rows of each arm contain- 
ing 25-30 spines, from center of disk to tip of arm. 
Brazil (Mull, and Trosch., in Mus. Berlin). Rio de Janeiro (Perrier, 
in Mus. Paris, collected by Frevcinet, 1822, Gaudichaud, 1839, and Cas- 
telneau, 1844). This species was not found at Rio de Janeiro by the 
Geological Commission. The term Rio de Janeiro is often used in a 
general way to designate Brazil, and it is not improbable that the 
specimens in the Paris Museum came from some other part of the coast. 
Florida to Rio de Janeiro (Lutken). Puerto Cabello ; Jamaica (Verr.), 
Linckia Guildingii Gray. 
Ann. and Mag. Mat. Hist., vi. p. 285. 1840. 
Linckia ornithapus (Lutken) Yerrill, Trans. Conn. Acad., i, p. 367. 1868. 
Rio Formoso, Pernambuco (Branner). Maceio, Alagoas (Hartt, ’67)- 
Mar Grande, Bay of Bahia (Rathbun). Abrolhos Reefs (Hartt, ’67). 
So far as known, this species is very rare on the Brazilian coast, only 
a few specimens having been collected at each of the above localities. 
Bahia (Perrier, Mus. Paris). Vera Cruz ; Guadeloupe ; Cape Verde 
Isis. (Perr.). St. Thomas (Ltk.). St. Vincent (Gray). 
Pentagonaster semilunatUS iLinck. 1733) Perrier. 
Arch, de Zool. Exper., v, Xo. 1, p. 24, 1876. 
Goniaster cuspidalus Gray. Ann. Xat. Hist., vi, p. 280, 1840. 
Brazil (Perrier, Mus. Paris, from Castelneau). 
