232 CHECK-LIST OF NORTH AMERICAN BIRDS. 



south to northern California, Nevada, northern New Mexico, Texas, Louisiana, 

 and North Carolina; winters from southeastern California and the Ohio and 

 Potomac valleys (casually further north) to the Gulf coast and central Mexico. 



b. Molothrus ater obscflrus (Gmelin). Dwarf Cowbird. [495a.] 



Stwnus ohscuTus Gmelin, Syst. Nat., I, ii, 1789, 804. (Mexico.) 



Range. — Southeastern California and southern Nevada east to southern 

 Texas and south in Mexico to Oaxaca, Colima, and Jalisco. 



Genus TANGAVIUS Lesson. 



Tangavius Lesson, Revue Zool., II, 1839, 41. Type, by monotypy, 

 Tangavius involucratus Lesson. 



Tangavius seneus (Wagler). 



Range. — Central America and Mexico north to the southern border 

 of Texas and Arizona. 



a. Tangavius seneus sneus (Wagler). Bronzed Cowbird. [496a.] 

 Psarocolius ceneus Wagler, Isis, XXII, 1829, 758. (Mexico.) 



Range. — Northwestern Mexico to southern Arizona (near Tucson, breed- 

 ing)- 



h. Tangavius seneus involucrdtus Lesson. Red-eyed Cowbird. [496.] 



Tangavius involucratus Lesson, Revue Zool., II, 1839, 41. (Mexico.) 



Range. — San Antonio, Texas, south through eastern Mexico, Yucatan, 

 and Central America to Panama. 



Genus XANTHOCEPHALUS Bonaparte. 



Xanthocephalus Bonaparte, Consp. Avium, I, 1850, 431. Type, by 

 monotypy, Psarocolius perspicillatus Wagler = Icterus xanthocephalus 

 Bonaparte. 



Xanthocephalus xanthoc§phalus (Bonaparte). Yellow-headed Black- 

 bird. [497.] 



Icterus xanthocephalus Bonaparte, Journ. Acad. Nat. Sci. Phila., V, 

 1826, 223. (Engineer Cantonment, near Omaha, Nebraska.) 



