6 Mr. P. L, Sclater on the 



t/Scolecophuyus sericeus, Sw. An. in Mcuag. p. 301. 



Molothrus bonariensis, Cab. Mus. Hein. i. p. 1 93 ; Scl. et Salv. 

 P. Z. S. 1868, p. 140 (Arg. rep.), et Nomencl. p. 37; Cassin, 

 Pr. Ac. Sc. Phil. 1866, p. 19; Hudson, P. Z. S. 1872, p. 809, et 

 1874, p. 153 et seqq. (Buenos Ayres) ; Berlepsch, Journ. f. Orn. 

 1873, p. 249 (Santa Catharina) ; Durnford, Ibis, 1877, pp. 33, 

 174 (Chupat); Forbes, Ibis, 1881, p. 339 (Pernambuco) . 



Icterus violaceus, Wied, Beitr. iii. p. 1212. 



Icterus minor, Spix, Av. Bras. i. p. 67, t. Ixiii. fig. 2 (?). 



Molothrus niger, Gould, Zool. Voy. 'Beagle,' iii. p. 107. 



Passerina discolor, Vieill. N. D. d'H. N. xxxiv. p. 552, et 

 Enc. Meth. p. 937. 



Molobrus sericeus, Burm. Syst. Ueb. iii. p. 279, et La- Plata 

 Eeise, ii. p. 494; Sternb. J. f. O. 1869, p. 125. 

 Ater, purpureo-nitens, unicolor, in alis et cauda magis seneus ; 

 rostro et pedibus nigris : long, tota 7*7, alee 4*5, caudse 

 3'0. Fern. Fuscescenti-cinerea, subtias paulo dilutior. 



Hab. Brazil and southwards throughout Buenos Ayres to 

 Patagonia; Chupat {Durnford). 



Mus. P. L. S. et S.-G. 



I am not quite satisfied as to the real distinctness of what 

 are usually regarded as the northern representatives of this 

 species [M. atronitens, M. cassini, and M. purpurascens) , but 

 for the present I keep their synonymy distinct. 



5. Molothrus atronitens. 



Molothrus atronitens, Cab. in Schomb. Guiau. iii. p. 682, 

 et Mus. Hein. i. p. 193; Pelz. Orn. Bras. p. 200; Finsch, 

 P. Z. S. 1870, p. 576 (Trinidad) ; Scl. et Salv. Nomencl. p. 37 

 (1873) ; Berlepsch, J. f. O. 1873, p. 249. 

 Similis praecedenti, sed crassitie minore : long, tota 7*5, alie 

 3-7, caudse 2-8. 



Hab. Guiana, Venezuela, and Trinidad. 



Mus. P. L. S. et S.-G. 



6. Molothrus cassini. 



Molothrus discolor, Cassin, Pr. Ac. Sc. Phil. 1866, p. 20; 

 Scl. et Salv. Nomencl. p. 37, et P. Z. S. 1879, p. 509 (Auti- 

 oquia) ; Salv. et Godman, Ibis, 1880, p. 123 (S. Marta). 



