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 obscirus (GMELIN). Dwarf Cowbird. [495a.] 
Sturnus obscurus 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 eneus (WaAGLER). 
RANGE.— Central America and Mexico north to the southern border 
of Texas and Arizona. 
a. Tangavius eneus zeneus (WAGLER). Bronzed Cowbird. [496a.] 
Psarocoltus eneus WAGLER, Isis, XXII, 1829, 758. (Mexico.) 
RanceE.— Northwestern Mexico to southern Arizona (near Tucson, breed- 
ing). 
b. Tangavius zneus involucrétus 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. 
Xanthocéphalus xanthocéphalus (BONAPARTE). Yellow-headed Black- 
bird. [497.] 
Icterus xanthocephalus BONAPARTE, Journ. Acad. Nat. Sci. Phila., V, 
1826, 223. (Engineer Cantonment, near Omaha, Nebraska.) 
