Species of the Family Icteridte. 15 



(Texas) ; Coues, Key, p. 156, et B. N. W. p. 188; Baird, 

 Brew., et Ridgw. B. N. A. ii. p. 167 ; Poey, Rep. F.-N. i. 

 p. 288 (Cuba) ; Cooper, B. Calif, p. 267. 

 Niger ; capite undique (nisi in loris et regione oculari) cum 



pectore superiove flavis ; macula magna alari alba ; rostro 



et pedibus nigris : long, tota 9'0, ahie 5*5, caudse 3*8. 



Fern. Crassitie minore et pileo nigro, superciliis solum 



flavis, necnon macula alari nulla diversa. 

 Hab. Prairies of Western N. America from California and 

 the Saskatchewan to Texas and S. Mexico : valley of Mexico 

 {White and V Estrange) ; Presidio, W. Mexico (Forrer-) . 

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



The name icterocephalus was applied to this bii'd by Bona- 

 parte in error, under the belief that it was the Oriolus ictero- 

 cephalus of Linnseus. It is therefore necessary to adopt the 

 next oldest name. 



Genus VI. Xanthosomus. 



Chrysomus, Sw. Class. Birds, ii. p. 274 (1837) : type X. ic- 

 terocephalus. 



Xatithosomus, Cab. Mus. Hein. i. p. 189 (1851) : type X. ic- 

 te7'ocephahis. 



Er-ythropsar , Cass. Pr. Ac. Sc. Phil. 1866, p. 18: type X 

 ruficapillus. 



Clacis specierum. 

 a. Pileo flavo, 



corpore subtus nigro (1) icterocephalus. 



corpore subtiis flavo (2)Jlnvus. 



h. Pileo castaneo, 



clariore (.3) frontalis. 



obscuriore (4) ruficapillus. 



1. Xanthosomus icterocephalus. 



Oriolus icterocephalus, Linn. S. N. i. 163. 



Chrysomus icterocephalus, Sw. Nat. Hist. Birds, ii. p. 274 • 

 Bp. Consp. i. p. 431 ; Sclater, P. Z. S. 1857, p. 18; Cab. in 

 Schomb. Guian. iii. p. 681 ; Leotaud, Ois. Trinidad, p. 281. 



Xanthosomus icterocephalus , Cab. Mus. Hein. i. p. 189 ; 

 Scl. Cat. A. B. p. 136; Scl. et Salv. P. Z. S. 1866, p. 182 

 (Ucayali), 1867, p. 573 (Lower Amazons) et p. 978 (Pebas), 



