288 CHECK-LIST OF NORTH AMERICAN BIRDS. 



Kansas, the Ohio Valley, and New Jersey (locally southern New England) 

 south to the Greater Antilles, Mexico, and Panama, and on the Pacific coast 

 from central Oregon to southern California and northern Lower California. 

 Accidental in Greenland and eastern Siberia. 



Dendroica auduboni auduboni (Townsend). Audubon's Warbler. [656.] 



Sylvia Auduboni J. K. Townsend, Journ. Acad. Nat. Sci. Phila., VII, Pt. ii 

 [Nov. 21, 1837], 191. (forests of the Columbia river [near Fort Van- 

 couver, Washington].) 



Range. — Breeds in the Canadian and Transition zones from central British 

 Columbia, central Alberta, and west-central Saskatchewan south to the moun- 

 tains of southern California, Arizona, and southeastern New Mexico, and east 

 to South Dakota (Black Hills) and western Nebraska. Winters from the val- 

 leys of northern California (casually southern British Columbia) and the Rio 

 Grande to Guatemala. Accidental in Minnesota, Pennsylvania, and Massa- 

 chusetts. 



Dendroica auduboni nigrifrons Brewster. Black-fronted Warbler. [656a.] 



Dendroica nigrifrons Brewster, Auk, VI, No. 2, April, 1889, (separates 

 publ. Jan. 31), 94. (Pinos Altos, Chihuahua, Mexico.) 



Range. — Breeds in the Huachuca Mountains, Arizona, and south through 

 the mountains of Chihuahua and Durango, Mexico, to Guatemala. 



Dendroica nigrescens (Townsend). Black-throated Gray Warbler. [665.] 



Sylvia nigrescens J. K. Townsend, Journ. Acad. Nat. Sci. Phila., VII, Pt. 

 ii [Nov. 21, 1837], 191. (Vicinity of the Columbia river = near Fort 

 WiUiam [Portland], Oregon.) 



Range. — Breeds in the Transition Zone from southern British Columbia, Ne- 

 vada, northern Utah, and northwestern Colorado south to northern Lower 

 California, southern Arizona, and southern New Mexico. Winters in southern 

 Lower California and in Mexico from Durango to Michoacan, Vera Cruz, and 

 Oaxaca. Accidental in Massachusetts. 



Dendroica townsendi (Townsend). Townsend' s Warbler. [668.] 



Sylvia Townsendi "Nuttall", J. K. Townsend, Journ. Acad. Nat. Sci. 

 Phila., VII, Pt. ii [Nov. 21, 1837], 191. (forests of the Columbia River 

 = Fort Vancouver, Washington.) 



Range. — Breeds in the Boreal and Transition zones from Prince William 

 Sound and the upper Yukon, Alaska, south to Washington, and east to south- 

 western Alberta and western Montana. Winters from central California to 

 Nicaragua; in migration east to eastern Wyoming, western Nebraska, eastern 

 Colorado, and western Texas. Accidental in Pennsylvania. 



