ORDER PASSERES. | wyaidal 361 
Hylocichla ustulata (NUTTALL). 
RancE.— North America, breeding mainly (except in mountains) 
north of the United States; in winter southern Mexico to Brazil and 
Bolivia. 
a. Hylocichla ustulata ustulata (NurTaLL). Russet-backed Thrush. [758.] 
Turdus ustulatus Nuttauu, Manual Orn., Land Birds, ed. 2, 1840, 400 
(and errata, p. vi). (Columbia River, probably near Fort Vancouver, 
Washington.) 
Rance.— Pacific coast of North America to northern South America. 
Breeds in Canadian, Transition, and possibly Upper Austral zones from 
Juneau, Alaska, to San Diego County, California; winters from Vera Cruz, 
Guatemala, and Costa Rica to eastern Ecuador and British Guiana. 
b. Hylocichla ustulata swainsoni (Tscuup1). Olive-backed Thrush. [758a.] 
Turdus swainsoni TscHup1I, Fauna Peruana, 1845-46, Orn., 28. (New 
Jersey.) 
Rance.— North and South America. Breeds in lower Hudsonian and 
Canadian zones from northwestern Alaska, northwestern Mackenzie, central 
Keewatin, southern Ungava, and Newfoundland south to Kenai Peninsula, 
Alaska, eastern Oregon, Nevada, Utah, Colorado, northern Michigan, New 
York, and in mountains from Massachusetts to Pennsylvania and West 
Virginia; winters from southern Mexico to Peru, Bolivia, Brazil, and Argen- 
tina; casual in Cuba and Bermuda. 
Hylocichla guttadta (PALuas). 
RancEe.— Northern North America and mountains of western 
United States; in winter southern United States, Cuba, and Mexico 
to tableland of Guatemala. 
a. Hylocichla guttata guttata (Pattas). Alaska Hermit Thrush. [759.] 
Muscicapa guttata Patuas, Zoogr. Rosso-Asiatica, I, 1826 (1811), 465. 
(Kadiak Island, Alaska.) 
Rance.— Western North America. Breeds mainly in Hudsonian Zone 
from south central Alaska (Mt. McKinley) south to Kadiak Island and Cross 
Sound; winters south to Lower California, Sonora, Chihuahua, Nuevo Leon, 
and Tamaulipas; in migration east to eastern Oregon, Nevada, and New 
Mexico. 
