324 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



[Oloconjs alpestris.] Subsp. y. Otocorys ruhea Sharpe, Cat. Birds Brit. Miis., xiii, 



1890, 548, ])art (Oaxaca). 

 Otocoris alpestris pallida (not of Townsend) Dwight, Auk, vii, 1890, 154-155, part 



(Tehuantepec, Oaxaca). 

 Otocoris alpestris oaxaca Nelson, Auk, xiv, Jan., 1897, 54 (San Mateo del Mar 



Oaxaca, s. e. Mexico; coll. U. S. Nat. Mus.). — Oberholser, Proc. TJ. S. Nat. 



Mu8., xxiv, 1902, 854 (monogr.). 



OTOCORIS ALPESTRIS OCCIDENTALIS i McCall). 

 MONTEZUMA HORNED LARK. 



Similar to 0. a. leucolsema, but decidedly larger, back much more 

 buff}' or cinnamomeoiis, and liindneck, etc., deeper and more riifes- 

 cent (less pinkish) vinaceous; similar also to 0. a. adusta but decid- 

 edly larger and with color of upper parts less ruddy and showing 

 more contrast between the darker and obviously streaked ])ack and 

 more vinaceous hue of hindneck. Adult female similar to that of 

 0. a. leucolsema but larger and general color of upper parts slightly 

 more huffy or cinnamomeous; similar also to that of 0. a. adusta 

 but larger. Young somewhat like that of 0. a. leucolsema but darker 

 and much browner; very similar to that of 0. a. adusta but slightly 

 less tawny or rufescent. (Intermediate, except in size, between 

 0. a. leucolsema and 0. a. adusta.) 



Adult male.— Length (skins), 158-172 (166); wmg, 103.5-110.5 

 (106.4); tail, 67-75 (71.4); exposed culmen, 10-13 (11.2); tarsus, 

 20-23 (21.8); middle toe, 10.5-12.5 (11.6)." 



Adult female.— Lenorth (skins), 140-150 (146); wing, 95-103 

 (98.8); tail, 62-66 (63.8); exposed culmen, 9.5-12 (10.3); tarsus, 

 19-22 (21); middle toe, 10-12 (1.13)". 



Breeding from central New Mexico to central Arizona; migrating 

 to northern Chihuahua (San Luis Spring; Animas Valley; City of 

 Chihuahua; San Diego), northern Sonora (La Noria; Santa Cruz 

 River), and western Texas (Marfa; El Paso; Laredo; Sierra Blanca; 

 Comanche ; Henrietta) . 



Otocoris? occidentalis McCall, Proc. Ac. Nat. Sci. Phlia., June, 1851, 218 (Santa 



Fe, New Mexico; coll. Acad. Nat. Sci. Philadelphia'). 

 Otocoris alpestris occidentalis Stone, Proc. Ac. Nat. Sci. Phila., 1899, 21 (crit.). — 



Oberhol.ser. Proc. U. S. Nat. Mus., xxiv, 1902. 855 (monogr. V — American 



Ornithologists' Union Committee, Auk, xx, 1903, 344 (check list no. 



4741). 

 (?) Eremophila cornuta . . . (var. occidentalis) Dresser, Ibis, 1865, 486, part (San 



Antonio, etc., Texas). 

 {Eremophila alpestris] h. leucolsema Coues, Birds Northwest, 1874, 38. part. 

 [Otocoris alpestris] arenicola Henshaw, Auk, i, 1884, 259, part. 

 Otocoris alpestris adusta Dwight, Auk, vii, 1890, 148, part. — Ridgway, Man. N. 



Am. Birds, 2d ed., 1896, 599, part. 



"Fifteen specimens. 



