ORDER PASSERES. 299 



[Vireosylva flavoviridis CASSIN. Yellow-green Vireo. [625.] 



Vireosylvia flavoviridis CASSIN, Proc. Acad. Nat. Sci. Phila., V, 1851, 152. 

 (Panama.) 



RANGE. Tamaulipas, Nuevo Leon, and Sinaloa, south to South 

 America; accidental at Brownsville, Texas, Riverside, California and 

 Godbout, Quebec.] 



Vireosylva philadelpbica CASSIN. Philadelphia Vireo. [626.] 



Vireosylvia philadelphica CASSIN, Proc. Acad. Nat. Sci. Phila., V, 1851, 

 153, pi. 10, fig. 2. (Near Philadelphia, Pa.) 



RANGE. Eastern North America. Breeds in Canadian Zone 

 from northern and central Alberta, northern Manitoba, northern 

 Ontario, New Brunswick, and Maine to northern Michigan and New 

 Hampshire; winters from Cozumel Island and Guatemala to Veragua. 



Vireosylva gilva (VIEILLOT). 



RANGE. Temperate North America, south in winter to Guatemala. 



a. Vireosylva gilva gilva (VIEILLOT). Warbling Vireo. [627.] 



Muscicapa gilva VIEILLOT, Ois. Amer. Sept., I, 1807 (1808), 65, pi. 34. 

 (Middle United States, particularly New York.) 



RANGE. Eastern North America. Breeds in Transition and Austral zones 

 from southeastern Alberta, northern Manitoba, central Ontario, and Nova 

 Scotia south to northwestern Texas, southern Louisiana, North Carolina, and 

 Virginia; winter home unknown, but south of the United States. 



b. Vireosylva gilva swainsoni (BAIRD). Western Warbling Vireo. [627a.] 



Vireo swainsonii BAIRD, Rep. Expl. & Surv. R. R. Pac., IX, 1858, 336. 

 (Petaluma, California.) 



RANGE. Western North America. Breeds in Canadian, Transition, and 

 Upper Austral zones from southern British Columbia, southwestern Mackenzie, 

 and northeastern Alberta south to southern Lower California, northern Sonora, 

 Arizona, New Mexico, and western Texas, and east to western South Dakota 

 and northwestern Nebraska; winters south to Guatemala. 



