152 It. Rathbun — List of the Brazilian Echinoderins. 



Ophionereis reticulata (Say) Liitken. 



Addit. ad Hist. Oph., p. 110, 1859; Lymau, Illust. Cat., No. I, p. 141, 1865; Ver- 

 rill. Trans. Conn. Acad., i, p. 366, 1 868. 



Plataforma and Mar Grande, Bay of Bahia, Hat rocky shores, 

 under stones, moderately abnndant (Kathbun). Abrolhos Islands 

 (Hartt, '67; Rathbun). Rio de Janeiro Harbor; off Cape Frio (H. 

 E.). Northern Brazil (Ljungman). Florida; West Indies; Bay of 

 Cumana ; Bermudas (Lyman). 



Ophiocoma echinata (Lam.) Agass. 



Prod. Mem. Soc. 8cien. Xat. de Neuchatel, i, 1835; Lyman, lUust. Cat., No. I, p. 

 81, 1865. 



Several specimens of this species, in fine condition, were brought 

 from Parahyba do Norte, by Mr. Branner in 1876. They were 

 obtained from shallow water, near the shore. A medium size speci- 

 men measured : diameter of disk, 26 "o""" ; length of arm, 84°"". 

 Florida; West Indies; Aspinwall ; Bay of Cumana (Lyman). 



Ophiocoma Riisei Liitken. 



Vidensk. Meddelelser, Jan., 1856, p. 14; Lyman, Illust. Cat, No. i, p. 76, 1865. 



One large specimen of this species Avas obtained by Mr. Branner 

 in 1876, from the shore of the Island of Fernando de Noronha. It 

 measured: diameter of disk, 29"""; length of arm, 181""". In the 

 characters of its several parts it agreed quite closely with the descrip- 

 tion of Mr. Lyman (loc. cit.), the differences noted being such as 

 would naturally arise from its increased growth. Florida ; West 

 Indies; Bay of Cumana (Lyman). 



Ophiopsila Riisei Liitken. 



Addit. ad Hist. Oph., p. 136, 1859; Lyman, Illust. Cat., No. I, p. 150, 1865. 

 Noi'thern Brazil (Ljungman). Florida (Lyman). West Indies 

 (Ljung.) 



Ophiothrix Violacea MiUl. and Trosch. 



Syst. Asterid., p. 115, 1842; Lyman, lUust. Cat., No. I, p. 164, 1865; VerriU, 

 Trans. Conn. Acad., i, p. 366, 1868. 



This is one of the most wide-spread of the Brazilian Ophiurans, 

 having been recorded from Parahyba do Norte in the north, to Rio 

 de Janeiro in the south, and from the littoral zone to a depth of at 

 least 35 fathoms. In the Bay of Bahia it is particularly abundant, 



