R. Rathbun— Echinoid fauna of Brazil. 83 
but it was found in great abundance by Mr. J. C. Branner, on 
the shores of the island of Fernando de Noronha, situated nearly 
recorded by Mr. Agassiz, it was limited to the main shores and 
islands of the seas between North and South America, and to 
the Bermudas. 
The third and last species mentioned, Me/lita sexforis, was 
dredged from the shallow water inside of Fort Villegagnon, in 
the harbor of Rio de Janeiro, by Professor E. Selenka, who has 
kindly presented the Commission with several specimens. ey 
are very numerous in this one locality, but, so far as we know, 
have not been obtained from any other part of Brazil this 
of the specimen from Cape Verde Isles, figured by Agassiz (op. 
cit., pl. 1d), and varies much in the length and strength of the 
Spines, which are usually more or less overgrown with calcare- 
ous sea weeds. Though Fernando de Noronha is not 200 miles 
distant from the main coast, yet there intervenes a great depth 
Water, as ascertained by recent exploration ; the marine fauna 
of the island, however, seems to be very similar to that of the 
The following list probably contains all the littoral species 
of Echini at present known from Brazil, all of which, with the 
