270 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



AMPHISPIZA BELLI NEVADENSIS Ridgway. 

 SAGE SPARROW. 



Similar to A. h. belli, but much larger and coloration paler and grayer; 

 the back more frequently (usually distinctly) streaked with dusky; 

 lateral throat-stripes reduced to a more or less broken series of dusky 

 grayish streaks. 



Yoiong. — Pileum, hindneck, chest, and sides, as well as back, streaked 

 with dusky; otherwise essentially like adults. 



Adult maZe.— Length (skins), 139.70-157.48 (149.61); wing, 77.47- 

 81.28 (79.25); tail, 70.61-78.49 (74.68); exposed culmen, 9.40-10.41 

 (10.16); depth of bill at base, 5.08-5.84 (5.59); tarsus, 20.83-22.61 

 (21.59); middle toe, 12.70-14.73 (13.46).^ 



Adult female.— Length (skins), 137.16-157.48 (146.81); wing, 72.39- 

 80.01 (75.69); tail, 67.31-75.69 (71.37); exposed culmen, 9.40-10.41 

 (9.91); depth of bill at base, 5.33-5.84 (5.59); tarsus, 18.80-22.35 

 (20.57); middle toe, 12.70-13.97 (13.46).' 



Sagebrush plains of Great Basin and Rocky Mountain districts of 

 United States, north to eastern Oregon (Camp Harney, etc.), southern 

 Idaho (Birch Creek, Lemhi R., Snake R., etc.), and southern Wyo- 

 ming; east to eastern base of Rocky Mountains in Wyoming (near 

 Cheyenne), Colorado (San Luis Park, etc.), and New Mexico; west to 

 base of Sierra Nevada; south, in winter, to western Texas (Fort Davis, 

 etc.), southern New Mexico, Arizona, and southeastern California 

 (Colorado Desert, Los Angeles Co.,' etc.). 



Poospha belli (not Emberlza belli Cassin) Baikd, Eep. Pacific E. R. Surv., ix, 1858, 

 470, part (Fort Thorn, New Mexico; Colorado B. ), 927 (Fort Bridger, Wyo- 

 ming) ; Cat. N. Am. Birds, 1859, no. 356, part.— Coues, Ibis, 1865, 164 (Fort 

 Whipple, Arizona); Proc. Ac. Nat. Sci. Phila., 1866, 86 (do.); Check List, 

 1873, no. 173, part.— Cooper, Orn. Cal., 1870, 204, part (valleys of Gila and 

 Colorado and Fort Thorn) . — Stevenson, Prelim. Eep. U. S. Geo!. Surv., 1871, 

 465 (Henry's Fork, Green R., and Eock Creek, s. Wyoming) . — Allen, Bull. 

 Mus. Comp. Zool., iii, 172, 177 (Ogden, Utah). — Baied, Brewer, and Ridg- 

 way, Hist. N. Am. Birds, i, 1874, pi. 26, fig. 9 (not text, p. 593). 



Poospiza bellii Kennerly, Rep. Pacific R. R. Surv., x, pt. vi, 1859, 29 (Little Colo- 

 rado R., Arizona, Dec). — Allen, Am. Nat., vi, 1872, 289 (Salt Lake Valley, 

 Utah). 



PoQspiza bellii, var. nevadensis'RivawAY, Bull. Essex Inst., v, Nov., 1873, 182 (Colo- 

 rado), 191 (first described); 198 (redescribed and type first designated, from 

 West Humboldt Mts., Nevada; U. S. Nat. Mus.). 



Poospiza belli . . var. nevadensis Coues; Check List, 1874, p. 127 (no. 173a). — 

 Yarrow and Henshaw, Eep. Orn. Spec. Wheeler's Surv., 1872 (1874), 14 

 (Rush Lake, etc., Utah). — Henshaw, Eep. Orn. Spec. Wheeler's Surv., 1873 

 (1874), 115 (San Pedro and Gila valleys, Arizona, Oct.); ib., 1877, 1309 (Oar- 



^ Twelve specimens. 

 ^ Eleven specimens. 



''Also in July, but probably migrants and not breeding; Grinnell, Auk, xv, 1898, 

 58, 59. 



