ORDER PASSERES. 325 



Wilsonia pusilla (WILSON). 



RANGE. North America, breeding almost wholly north of the 

 United States, except in the Rocky Mountain region and near the 

 Pacific coast; winters in Mexico and Central America. 



a. Wilsonia pusilla pusilla (WILSON). Wilson's Warbler. [685.] 



Muscicapa pusilla WILSON, Amer. Orn., Ill, 1811, 103, pi. 26, fig. 4. 

 (Southern States, and lower New Jersey and Delaware.) 



RANGE. Eastern North America. Breeds in Boreal zones from tree limit 

 in northwestern and central Mackenzie, central Keewatin, central Ungava, 

 and Newfoundland south to southern Saskatchewan, northern Minnesota, 

 central Ontario, New Hampshire, Maine, and Nova Scotia; winters in eastern 

 Central America from Guatemala to Costa Rica and occasionally north to 

 Michoacan; migrates mainly along the Alleghenies; practically unknown in 

 the Austroriparian Zone from Virginia to Louisiana. 



6. Wilsonia pusilla pileolata (PALLAS). Pileolated Warbler. [685a.] 



Motacilla pileolata PALLAS, Zoogr. Rosso- Asiatica, I, 1826 (1811?), 497. 

 (Kadiak, Alaska.) 



RANGE. Western North America. Breeds in Boreal zones from northern 

 Alaska south through eastern Oregon and eastern California to mountains of 

 New Me r xico and western Texas, and on the Pacific coast south and west to 

 Queen Charlotte Islands; winters from Durango and Nuevo Leon to Panama; 

 casual in Minnesota and Missouri. 



c. Wilsonia pusilla chryse*ola RIDGWAY. Golden Pileolated Warbler. [6856.] 



Wilsonia pusilla chryseola RIDGWAY, Bull. U. S. Nat. Mus., No. 50, Pt. 2, 

 1902, 714. (Red Bluff, California.) 



RANGE. Pacific coast. Breeds on the coastal slope from southern British 

 Columbia to southern California; winters in Chihuahua, Sonora, and Lower 

 California; casual in migration in eastern Oregon and Arizona. 



Wilsonia canadensis (LiNN^us). Canada Warbler. [686.] 



Muscicapa canadensis LINN^US, Syst. Nat., ed. 12, I, 1766, 327. (Can- 

 ada.) 



RANGE. Eastern North America. Breeds in the Canadian Zone 

 and casually in the Transition from central Alberta, southern Keewa- 

 tin, northern Ontario, northern Quebec, and Newfoundland south to 



