300 CHECK-LIST OF NORTH AMERICAN BIRDS. 
Genus LANIVIREO Bairrp. 
Laniwireo Barrp, Review Amer. Birds, 1866, 326, 345. Type, by orig. 
desig., Vireo flavifrons ViEILLOT. 
Lanivireo fiavifrons (VirILLoT). Yellow-throated Vireo. [628.] 
Vireo flavifrons Vie1tuor, Ois. Amer. Sept., I, 1807 (1808), 85, pl. 54. 
(Eastern United States.) 
RanGe.— Eastern North America. Breeds in Transition and 
Austral zones from southeastern Saskatchewan, southern Manitoba, 
southern Ontario, southern Quebec, and Maine south to central Texas, 
central Louisiana, and central Florida; winters from Yucatan and 
southern Mexico through Central America to Colombia; casual in 
winter in Cuba and the Bahamas. 
Lanivireo solitarius (WriLson). 
Ranee.— North America from Great Slave Lake south to Lower 
California and the highlands of Mexico; in winter south to Guatemala. 
a. Lamnivireo solitarius solitarius (WiLson). Blue-headed Vireo. [629.] 
Muscicapa solitaria Witson, Amer. Orn., II, 1810, 143, pl. 17, fig. 6. 
(Near Philadelphia, Pa.) 
RancGe.— Eastern North America. Breeds in Canadian and Transition 
zones from central Alberta, southern Mackenzie, southern Keewatin, central 
Ontario, southern Quebec, and Cape Breton Island south to northern North 
Dakota, central Minnesota, Michigan, mountains of southern Pennsylvania, 
and Rhode Island; winters in the Gulf States from Texas to Florida and from 
eastern Mexico to Guatemala; accidental in Cuba. 
b. Lanivireo solitarius cAssini (Xanrus). Cassin’s Vireo. [629a.] 
Vireo cassinit Xantus, Proc. Acad. Nat. Sci. Phila., 1858, 117. (Fort 
Tejon, California.) 
RanGe.— Pacific slope. Breeds in Transition Zone from central British 
Columbia, southwestern Alberta, and western Montana south through Cali- 
fornia and western Nevada to San Pedro Martir Mountains, Lower California; 
winters in Mexico south to Jalisco, Michoacan, Guanajuato, Oaxaca, and 
Chiapas, migrating through Utah, Arizona, Colorado, and New Mexico. 
ce. Lanivireo solitarius plambeus (Cours). Plumbeous Vireo. [629b.] 
Vireo plumbeus Cours, Proc. Acad. Nat. Sci. Phila., 1866, 74. (Fort 
Whipple, Arizona.) 
