BIRDS OF NORTH AND MIDDLE AMERICA. 311 



[Otocorys alpestris] arenicola Hensiiaw, Aiik, i, July, 1884, 259 (Denver, Colo- 

 rado; coll. U. S. Nat. Mus.o). 



0[tocorys] alpestris arenicola Henshaw, Auk, i, July, 1884, 265 (descriptions and 

 measurements). 



Otocoris alpestris arenicola American Ornithologists' Union, Check List, 

 1886, no. 474e.— Beckham, Auk, iv, 1887, 124 (Pueblo, Colorado).— Lloyd, 

 Auk, iv, 1887, 193 (w. Texas).— Cooke, Bird Migr. Miss. Val., 1888, 156 (North 

 Dakota, e. to Devils Lake; middle and w. Kansas; Concho and Tom Green 

 counties, w. Texas, winter). — Dwight, Auk, vii, 1890, 146 (monogr.). — 

 Merriam, North Am. Fauna, no. 5, 1891, 99 (Idaho, breeding). — Richmond 

 and Knowlton, Auk, xi, 1894, 304 (Montana). — Thorne, Auk, xii, 1895, 

 215 (Fort Keogh, Montana, breeding). 



0[tocoris] alpestris arenicola Ridgway, Man. N. Am. Birds, 1887, 349. 



0[tocorys] a[lpestns] arenicola Coues, Key N. Am. Birds. 5th ed., i, 1903, 507. 



[Otocorys leucohrma.] Subsp. /i. Otocorys arenicola Stiarpe, Cat. Birds Brit. Mus., 

 xiii, 1890, 540. 



Otocorys arenicola Sharpe_, Cat. Birds Brit. Mus., xiii, 1890, 671. 



OTOCORIS ALPESTRIS PRATICOLA Henshaw. 

 PRAIRIE HORNED LARK. 



Similar to 0. a. leucolsema but smaller and slightly darker, the 

 upper parts less vinaceous, the superciliary stripe usually white; 

 similar also to 0. a. Jioyti but nmch smaller, paler, and grayer above, 

 A\dth hindneck, etc., lighter vinaceous; similar also to 0. a. giraudi 

 but larger, hindneck, occiput, etc., clearer vinaceous; superciliary 

 stripe white or yellowash white, and j^ellow of tlu"oat paler. Adult 

 female similar to that of 0. a. arcticola but decidedly smaller and 

 usually with, throat more or less yello^dsh; similar to that of 0. a. 

 Jioyti but decidedly smaller, with \anaceous of lesser wing-coverts, 

 etc., paler and more pinkish; similar also to that of 0. a. leucolxma 

 but darker and less buffy and slightly smaller. Young much darker 

 than that of any other form, the general color of upper parts dark, 

 sooty brown or sooty black, freckled with small triangular dots and 

 bars of white, the chest pale buffy brown, heavily spotted or clouded 

 with dusky. (Intermediate between 0. a. lioyti and 0. a. giraudi, 

 but nearer the former.) 



Adult male.— Length (skins), 153-160 (157); \v'ing, 100-108 (104.2); 

 tail, 67-73 (69.5); exposed culmen, 10-12 (11.2); tarsus, 20.5-22.5 

 (21.6); middle toe, 11-12 (11.7).« 



Adult female. —Length, (skins), 140-147 (143); wing, 95-105 (96.8); 

 tail, 59-66 (61.7); exposed cidmen, 10-11.5 (10.8); tarsus, 20-23 

 (21.5); middle toe, 11-12.5 (11.7).'' 



« Neither type nor type locality are designated in Mr. Henshaw's article, but the 

 specimen selected by him as type is a breeding male from Denver, Colorado. 

 b Fifteen specimens. 



