ORDER PASSERES. 343 



753. Turdus ustulatus (Nltt.). 



Russet-backed Thrush. 



Turdus ustulatus Nutt. Man. Orn. Land B. ed. 2, 1840, 830 {cestu- 

 latus, err. typ. p. 400). 



[B152, C 5^,114, C II.] 



Hab. Pacific coast region of North America, from Alaska to Cali- 

 fornia, south in winter to Guatemala. 



758 a. Turdus ustulatus swainsonii (Cab.). 



Olive-backed Thrush. 



Turdus sivainsonii Qkv,. Fauna Per. 1845-46, 187. 

 Turdus ustulat2is (i. swainsoni RiDGW. Field & Forest, II. May, 

 1877, 195. 



[B 153, C 5, R4rt;, C 13.] 



Hab. Eastern North America, and westward to the Upper Colum- 

 bia River and East Humboldt Mountains, straggling to the Pacific 

 coast. Breeds mostly north of the United States. 



759. Turdus aonalaschkce Gmel. 



Dwarf Hermit Thrush. 



Turdus aonalaschkce Gmel. S N. I. ii. 1788. 808. 



[B150, C4^, R5, C8.] 



Hab. Pacific coast region, from Alaska to Lower California, east, 

 during migrations, to Nevada and Arizona. Breeds from California 

 northward. 



759^. Turdus aonalaschkse auduboni (Baird). 



Audubon's Hermit Thrush. 



Turdus auduboni Baird, Rev. Am. B. June, 1864, 16. 

 Turdus aonalaschkce auduboni Ridgw. Pr. U. S. Nat. Mus. Vol. 3, 

 March 27, 1880, i. 



[B 149^, C 4^-, R 5<7, C 9.] 



Hab. Rocky Mountain region, from near the northern border of 

 the United States south into Mexico. 



759^. Turdus aonalaschkaB pallasii (Cab.). 



Hermiit Thrush. 



Turdus pallasii Cab. Wiegm. Archiv. 1847, i 205. 

 Turdus aonalaschkce pallasi lilDGW. Pr. U. S. Nat. Mus. III. 

 March 27, i83o, i. 



