BIKDS OF NORTH ATSTD MIDDLE AMERICA. 431 



Adults {sexes alike). — Above plain, deep olive-gray or smoke gray, 

 the pileum usually very slightly clearer gray, or less tinged with olive, 

 than back, etc. ; wings and tail darker and more brownish gray, with 

 light gray edgings; sides of head, including loral, orbital, suborbital, 

 malar, and auricular regions, plain hair brown or drab; under parts 

 plain pale smoke gray or drab-gray (more whitish in worn midsummer 

 plumage), the chin and sides of upper throat tinged with drab;" bill, 

 legs, and feet black; iris pale yellow or yellowish white (sometimes 

 present only as an outer ring and concealed by eyelids). 



Young. — Similar to adults, but sides of head less distinctly brownish 

 (nearly concolor with'pileum) and plumage of looser texture. 



Adult male.— IjQugih (skins), 100.5-114 (107.3); wing, 48.5-63 (51); 

 tail, 64.5-62 (56.7); culmen, 6.5-7.5 (7); tarsus, 16.6-16.6 (16.2); mid- 

 dle toe, 7.5-8.5 (8.2).6 



Adult female.— L&ngth. (skins), 94-111 (105.6); wing, 49-53.5 (50.6); 

 tail, 51-58.5 (55.8); culmen, 6.5-7.6 (7); tarsus, 16-16.5 (15.8); middle 

 toe, 8-8.5 (8.1).* 



Arid interior districts of western United States; north to eastern 

 Oregon (Camp Harney, Cafion City, etc.) and southwestern Wyoming 

 (Green River); east to Colorado (El Paso, Fremont, Pueblo, and Gar- 

 field counties) and southwestern Texas (Guadalupe, Davis, and Chisos 

 Mountains, El Paso, Jeff Davis, and Brewster counties); west to west- 

 ern Nevada and southeastern California (Panamint Mountains, Lone 

 Valley, etc., Inyo County); south to about parallel of 30° in south- 

 western Texas, northern Chihuahua (?), and northern Sonora (near 

 Oposura). 



P\_arus] minimus (not of Townsend) Gameel, Journ. Ac. Nat. Sci. Phila., ii, 



1847, 36, part ( Rocky Mts.). 

 Parus minimus (not of Townsend) Henby, Proc. Ac. Nat, Sci. Phila., vii, 1855, 



309 (New Mexico). 

 Psaltriparus minimus (not of Bonaparte) Henry, Proc. Ac. Nat. Sci. Phila., xi, 



1859, 107 (New Mexico).— Henshaw, Ann. Lye. N. Y., xi, 1874, (3) (Utah); 



Annot. List Birds Utah, 1874, 40; Rep. Orn. Spec. Wheeler's Surv., 1874, 99. 

 Psaltria plumbea Baied, Proc. Ac. Nat. Sci. Phila., vii, June, 1854, 118 (Little 



Colorado E., Arizona; coll. U. S. Nat. Mus.). — Kennerly, Rep. Pacific R. 



R. Surv., iv, pt. vi, 1856, 10 (sixth camp, Little Colorado R. ). 

 Psallriparus plumheus Baird, Rep. Pacific R. R. Surv., ix, 1858, 398; ed. 1860 



(Birds N. Am.), atlas, pi. 33, fig. 2; Cat. N. Am. Birds, 1859, no. 299; Review 



Am. Birds, 1864, 84.— Kennerly, Rep. Pacific R. R. Surv., x, 1859, 27, pi. 33, 



fig. 2 (Little Colorado R. and Bill Williams' Fork, Arizona). — Henry, Proc. 



breed in the same localities in southwestern Texas, but that they each have distinc- 

 tive peculiarities of voice, etc. It is true that apparent intergradation does not 

 involve adult males, which are always very distinct, the difiiculty being in distin- 

 guishing those females and some young examples of P. m. lloydi which have no black 

 on the head from adults (both sexes) of P. plumbeus. 



ain some specimens (both males and females, according to labels) the flanks are 

 tinged with grayish vinaceous or ecru drab. 



6 Ten specimens, 



