ORDER PASSERIFORMES. 295 



Oporomis agilis (Wilson) . Connecticut Warbler. [678.] 



Sylvia agilis Wilson, Amer. Orn., V, 1812, 64 (pi. 39, fig. 4). (Connecti- 

 cut.) 



Range. — Breeds in the Canadian Zone from Alberta and Manitoba to central 

 Minnesota and northern Michigan. Winters in Colombia, Venezuela, and 

 northern Brazil, migrating through South Carolina, Florida, and the Bahamas; 

 rare in spring east of the AUeghanies but common in the Mississippi Valley; in 

 autumn rare in the Mississippi Valley but common east of the AUeghanies. 

 Casual northeast of Massachusetts and in Ontario; accidental in Colorado. 



Oporomis Philadelphia (Wilson) . Mourning Warbler. [679.] 



Sylvia Philadelphia Wilson, Amer. Orn., II, 1810, 101 (pi. 14, fig. 6). 

 (within a few miles of Philadelphia, Pa.) 



Range. — Breeds in the lower Canadian Zone from east-central Alberta, 

 central Saskatchewan, central Manitoba, Nova Scotia, Newfoundland, and the 

 Magdalen Islands south to central Minnesota, Michigan, central Ontario, and 

 in the mountains of New York, Pennsylvania, Massachusetts, and West Vir- 

 ginia. Winters from Nicaragua and Costa Rica to Venezuela, Colombia, and 

 Ecuador; in migration mainly west of the AUeghanies and to eastern Texas but 

 rare in the lowlands of the GuU States apparently making a continuous flight 

 across the Gulf of Mexico. Accidental in Porto Rico and Greenland. 



Oporomis tohniei (Townsend). Macgillivray's Warbler. [680.] 



Sylvia Tolmiei J. K. Townsend, Narr. Journ. Rocky Mts., AprU, 1839, 

 343. (Columbia River = Fort Vancouver, Washington.) 



Range. — Breeds mainly in the lower Canadian and Transition zones from 

 southeastern Alaska (casually to Pt. Barrow), and central British Columbia, 

 central Alberta, and southern Saskatchewan south to central California, north- 

 ern Arizona, and northern New Mexico, and from the Pacific coast to the east- 

 ern foothiUs of the Rocky Mountains and the Black HiUs of South Dakota. 

 Winters from Lower California to Colombia. Casual east in migration to 

 North Dakota, Nebraska, Illinois, Indiana, and central Texas. 



Genus GEOTHLYPIS Cabanis. 



Geothlypis Cabanis, Archiv fur Naturg., XIII, Pt. i, 1847, 316, 349. New 

 name for Trichas Swainson, April, 1827, nee Gloger, March, 1827. 

 Type, by tautonymy, Turdus trichas Linnaeus. 



Geothlypis trichas brachidactyla (Swainson). Northern YeUow-throat. 



[681d.] 



Trichas brachidactyliis Swainson, Anim. in Menag., 1838, 295. (northern 

 provinces of the United States.) 



