BIRDS OF NOETH AND MIDDLE AMERICA. 319 



OTOCORIS ALPESTRIS CHRYSOL2EMA (Wagler). 

 MEXICAN HORNED LARK. 



Similar to 0. a. insularis, but larger, upper parts browner, with 

 streaks on back much less dusky, hindneck, lesser wing-coverts, etc., 

 more vinaceous, and throat deeper yellow; still more like 0. a. 

 diaphora, but decidedly larger and with vinaceous of hindneck, etc., 

 deeper; most like 0. a. actia in coloration, but decidedly larger and 

 throat deeper yellow. Adult female similar to that of 0. a. actia but 

 slightly larger, upper parts more buffy (less yellowish) grayish 

 brown, lesser wing-coverts deeper and more uniform \dnaceous- 

 cimiamon, and throat brighter yellow; similar in coloration to that 

 of 0. a. oaxacse but decidedly larger. Young similar to that of 

 0. a. praticola, and sometimes scarcely distinguishable, but usually 

 browner and not quite so dark. 



Adult maZe.— Length (skins), 150-158 (153); \v4ng, 98.5-106.5 

 (102.9); tail, 64-71.5 (68.8); exposed culmen, 10-12 (10.9); tarsus, 

 20-23.5 (21.4); middle toe, 10.5-12 (11.2).« 



Adult female.— Length (one skin), 149; wing, 91-96.5 (94.8); tail, 

 58-63 (60.6); exposed culmen, 9.5-11 (10.5); tarsus, 20-22 (21.3); 

 middle toe, 10-11.5 (11.1 ).« 



Southern portion of Mexican plateau, in States of Vera Cruz (Perote; 



40 miles west of Mirador), Puebla (Puebla; Atlixco; San Martin; 



Chalchicomula), Mexico (Valley of Mexico; Ajusco; Salazar; Valley 



of Toluca; Amecameca), Tlaxcala (Apexoco; Huamantla), Zacatecas 



(Plateado), Guanajuato (Silao), and eastern Jalisco (Mesquitic); 



resident. 



Alauda chrysolaema Wagler, Isis, 1831, 530 (Mexico). 



[Eremophila alpestris] var. chrysolxma Baird, Brewer, and Ridgway, Hist. N. 



Am. Birds, ii, 1874, 144, part. 

 Otocoris alpestris chrysolxma Stejneger, Proc. U. S. Nat. Mus., v, 1882, 34.— 



DwiGHT, Auk, vii, 1890, 149, part (monogr.).— Oberholser, Proc. U. S. 



Nat. Mus., xxiv, 1902, 842 (monogr.). 

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

 0[tocorys] chrysolaema Cabanis, Mus. Hein., i, IbSl, 122 (Mexico). 

 Otocorys chrysolxma Sclater, Proc. Zool. Soc. Lond., 1856, 306 (Mexico). 

 Eremophila chrysolxma Sclater, Proc. Zool. Soc. Lond., 1864, 174 (City of Mexico) 

 [Eremophila] chrysolxma Sclater and Salvin, Nom. Av. Neotr., 1873, 40, 

 [Otocorys alpestris] chrysolxma Henshaw, Auk, i, July, 1884, 260, part. 

 E[remopMla] a[lpestris] chrysolxma Coues, Key N. Am. Birds, 2d ed., 1884,282, 



part. 

 (?) Phileremos cornutus (not Alauda cornuta Wilson) Bonaparte, Proc. Zool. 



Soc. Lond., 1837, 111 (Mexico). 

 Alauda minor (not of Gmelin) Giraud, Sixteen Species North Am. Birds. 1841, 



33 ("Texas; " type now in coll. U. S. Nat. Mus.). 

 (?) Eremophila minor Sclater, Cat. Am. Birds, 1862, 126. 



a Fifteen specimens. 



