646 



BULLETI-N 50, UNITED STATES NATIONAL MUSEUM. 



Adult /emaZe.— Length (skins), 128.5-142.5 (135.8); wing, 67-72 

 (69.4); tail, 48.6-57.5 (52.2); exposed oulmen, 16-19 (17.5); tarsus, 

 19-21.5 (20.7); middle toe, 12.5-14,5 (13.4). « 



Western United States, northern and central Mexico, and parts of 

 British Columbia; north to British Columbia (Vancouver Island; Bur- 

 rard Inlet; "^ Chilliwack;* Ashcroft), northern Idaho (Fort Sherman), 

 and Montana (Fort Shaw; Fort Keogh); eastward across Great Plains 

 to eastern Nebraska (Dakota County), southern Iowa (Decatur 

 County)?, western Kansas (Rooks and Ellis counties), middle Texas 

 (Bexar and Kendall counties), etc.; south over northern and central 

 Mexico to States of Zacatecas (Hacienda San Juan Capistrano), San 

 Luis Potosi (mountains near Jesus Maria), middle Sonora, etc. ; west 

 to Pacific coast, including Farallon Islands, Santa Barbara group" 

 (except San Nicolas Island) and Coronados group,* and peninsula of 

 Lower California. 



Troglodytes obsoletus Say, LoBg's Exp. Eocky Mts., ii, 1823, 4 (South Platte, 

 Colorado).— Audubon, Orn. Biog., iv, 1838, 443, pi. 360; Synopsis, 1839, 73; 

 Birds Am., oct. ed., ii, 1841, 113, pi. 116. — ^Woodhouse, in Eep. Sitgreaves' 

 Expl. Zuni and Col., 1853, 66 (San Francisco Mts., Arizona). — Hebkmann, 

 Journ. Ac. Nat. Sci. Phila., ii, 1853, 263 (moimtains of California); Rep. 

 Pacific E. E. Surv., x, pt. iv, 1859, 41 (California; New Mexico; Texas). — 

 Henky, Proc. Ac. Nat. Sci. Phila., 1855, 309 (New Mexico). — ^Newbeeky, 

 Eep. Pacific E. E. Surv., vi, 1857, 80 (Klamath Lakes and Des Chutes E., 

 Oregon). 



« Eleven specimens (all from mainland). 



Specimens from different localities, average, respectively, as follows: 



The series of island specimens is much too small to permit of satisfactory compari- 

 son with mainland examples. 



''Eare or casual at these coastwise localities; more common in southern" portion 

 of the interior. 



cSuflicient material from the various islands of these two groups may possibly 

 result in the separation of additional island forms. 



