148 R. Rathhun — List of the Brazilian Echinoderins. 



iiambuco 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""", 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 (Brauner) Avere found young individuals of this same variety, 

 associated with more typical specimens of E. sentus. Florida ; Hayti 

 (Verrill). West Indies (Mus. Yale Coll.). 



Echinaster Braziliensis Miiii. and Trosch. 



Syst. der Asterid., p. 22, 1842. 



I have seen only a single specimen that could be refei-red to this 

 species, as originally described by Mtiller and Troschel ; it was from 

 Rio Formoso, Pernambuco (Branner), Greatest diameter about 80""", 

 arras 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 (Mtill. and Trosch., in Mus. Berlin). Rio de Janeiro (Perrier, 

 in Mus. Paris, collected by Freyciiiet, 1822, Gaudicliaud, 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 l\io de Janeiro (Liitken). Puerto Cabello ; Jamaica (Verr.), 



Linckia Guildingii Gray. 



Ann. and Mag. Nat. Hist., vi, p. 285. 1840. 



Linckia oriiithopus (Liitken) Verrill, Trans. Conn. Acad., i, p. 867, 1868. 



Rio Formoso, Pernambuco (Branner). Maceio, Alagoas (Hartt, '67)- 

 Mar Grande, Bay of Bahia (Rathbun). Abrolhos Reefs (Uartt, '67). 

 So far as known, this species is very rare on the Brazilian coast, only 

 a few speciniens having been collected at each of the above localities. 

 Bahia (Perrier, Mus. Paris). Vera Cruz ; Guadeloupe ; Cape Verde 

 Isls. (Perr.). St. Thomas (Ltk.). St. Vincent (Gray). 



Pentagonaster semilunatus (Linck, 1733) Perrier. 

 Arch, de Zool. Exper., v, Xo. 1, p. 24, 1876. 

 Goniaster cuspidatus Gray, Ann. Nat. Hist., vi, p. 280, 1840. 



Brazil (Perrier, Mus. Paris, from Castelneau). 



