318 CHECK-LIST OF NORTH AMERICAN BIRDS. 
[B 154, part, C 5a, part, R 3, part, C 12, part.] 
Groce. Dist.— Mountainous parts of the northeastern States (Cat- 
skills, White Mountains, etc.) and Nova Scotia, migrating south in 
winter. 
758. Turdus ustulatus Nort. 
Russet-backed Thrush. 
Turdus ustulatus Nutr. Man. Orn. Land. B. ed. 2, 1840, 830 
(cestulatus, err. typ. p. 400). 
(Biba 2, Wee) Ras aah 
Geroc. Dist.— Pacific coast region of North America, from Alaska 
to California, south in winter to northern Lower California, Mexico, 
and Guatemala. 
753 a. Turdus ustulatus swainsonii (Caz.). 
Olive-backed Thrush. 
Turdus swainsoni Cas. Fauna Per. 1845-46, 187. 
Turdus ustulatus B. swainsont Ripcw. Field & Forest, II. May, 
1877, 195. 
PBix53, C5, R 4a, (C.13.] 
Geoc. Dist.— Eastern North America, and westward to the Upper 
Columbia River and East Humboldt Mountains, straggling to the 
Pacific coast. Southward in winter to Cuba, Guatemala, Nicaragua, 
Colombia, Ecuador and Peru. Casualin Bermuda. BHreeds in the 
northern Alleghanies, the Catskills, the mountainous parts of southern 
New England, southern Sierra Nevada, and northward. 
759. Turdus aonalaschkz GMEL. 
Dwarf Hermit Thrush. 
Turdus aonalaschke GMEL. 8S. N. I. ii. 1788, 808. 
(B 156, C 4b "Riis Cys. 4 
Groce. Dist.— Pacific Coast region, from Alaska to Lower Cali- 
fornia and western Mexico, east during migrations, to Nevada and 
Arizona. Breeds from the southern Sierra Nevada in California 
northward. 
