298 CHECK-LIST OF NORTH AMERICAN BIRDS. 



[B 252, C 126, R 140, C 176.] 

 HAB. Eastern United States ; south, in winter, to Costa Rica. 



629. Vireo solitarius (WILS.). 



> Blue-headed Vireo. 



Muscicapa solitaria WILS. Am. Orn. II. 1810, 43, pi. 17, fig. 6. 

 Vireo solitarius VIEILL. Nouv. Diet. d'Hist. Nat. XXXVI. 1819, 103. 



[B 250, C 127, R 141, C 177.] 



HAB. Eastern United States to the Plains. In winter, south to 

 Mexico and Guatemala. 



629 a. Vireo solitarius cassinii (XANTUS). 



Cassin's Vireo. 



Vireo cassinii XANT. Pr. Ac. Nat. Sci. Phila. 1858, 117. 

 Vireo solilarius var. cassini HENSH. Rep. Orn. Spec. (Wheeler's 

 Exp.), 1874, 105. 



[B 251, C , R 141 a, C 178.] 



HAB. Western United States ; confined to the Pacific slope during 

 the breeding season. 



G29. Vireo solitarius plumbeus (COUES). 



Plumbeous Vireo. 



Vireo plumbeus COUES, Pr. Ac. Nat. Sci. Phila. 1866, 74. 



Vireo solitarius \vx.plumbeus ALLEN, Bull. M. C. Z. III. 1872, 176. 



[B , C 127 a, R 141 *, C 179-] 



HAB. Western United States, from the eastern base of the Rocky 

 Mountains westward, south into Mexico in winter. 



SUBGENUS VIREO VlEILLOT. 



Vireo VIEILL. Ois. Am. Sept. I. 1807, 83. Type, V. musicus VIEILL. 

 = Muscicapa noveboracensis GMEL. 



630. Vireo atricapillus WOODH. 



Black-capped Vireo. 



Vireo atricapillus WOODH. Pr. Ac. Nat. Sci. Phila. 1852, 60. 



[B 427, C 133, R 142, C 185.] 

 HAB. Mexico and Texas, and north to Kansas. 



