NO. 1271. REIVE W OF THE HORNED LARKS— 0BERH0L8ER. 843 
Mea^'iuremenU {15 males). — Wing, 98.5-106.5 (average, 102.9) mm.; 
tail, 01-71.5 (average, 68.8) mm.; exposed culmen. 10-12 (average, 
10.9) mm.; tarsus, 20-23.5 (average, 21.1) mm.; middle toe, 10.5-12 
(average, 11,2) mm. 
Ti/2)e locality. — "Mexico: " probably the valle}^ of Mexico or vicinity. 
Geographical diMrihidioyi. — Mexico, from Puebla and central Vera 
Cruz to Zacatecas and eastern Jalisco. Nearly or quite resident. 
Deserijytion. — Adult male in h^eediiu/ 7;/?^;^?//^t'. — No. 71212, 
U.S.N.M. ; Valley of Mexico, Mexico. Back, wings and middle tail- 
feathers fuscous, edged with Inifty and cinnamon; remainder of tail 
brownish black, the outer paii- of feathers margined with white; 
occiput, cervix, bend of wing and upper tail-coverts deep pinkish 
vinaceous with a cinnamon tinge; crown, horns, lores, cheeks and 
jugulum ])lack; forehead, superciliary stripe, auriculars, chin and 
throat pale yellow, deepest on the two last; rest of lower parts white, 
the sides streaked with pinkish cinnamon* 
Adult female in hreeding 2^l^i^n<m<^' — No. 115013, U.S.N.M,, Bio- 
logical Survey Collection; Atlixco, Puebla, July 26, 1893; E. W. 
Nelson, Resembling the adult male in sunmier dress, but black of 
crown and sides of head replaced by mixed brown and blackish; occi- 
put and cervix pale cinnamon buff streaked with fuscous; bend of wing- 
less extensively pinkish vinaceous; 3^ellow of head and throat some- 
what paler: black area of jugulum smaller. 
Adult male in vrinter plumage. — No. 145015, U.S.N.M., Biological 
Survey Collection: Salazar, Mexico, Mexico, October 23, 1892; E. W. 
Nelson, Similar to the summer plumage, but upper surface quite 
uniform, the black of crown and the vinaceous of cervix almost 
entirely obscured by brownish tips to the feathers; yellow of head 
and throat deeper; black jugular crescent ob.scured by pale j^ellow and 
Inirtv; breast heavily streaked with dusky. 
Adult female in winter 2)lum age. — No. 344970, U.S.N.M., Biological 
Survey Collection; Salazar, Mexico, Mexico, October 24, 1892; E. W. 
Nelson, Like the summer garb, but darker and more uniform above; 
3^ello\v of throat and head deeper; black jugular crescent obscured b}' 
paler: brea.st heavily streaked with dusky. 
Otocoris a. chrysolsema resembles strigata., but is of larger size and 
more grajdsh color above, the nape more pinkish, the yellow of throat 
rarely showing below the back pectoral area, and in winter the streaks 
on breast more conspicuous. The present race is even more nearly like 
insularis, from which it differs chiefly in larger size and rather more 
brownish coloration. From nierrilli it is distinguished l)v much more 
l)rownish color above and deeper yellow of throat and eyebrow. 
The earliest name for an}"^ of the Mexican horned larks is Alauda 
chrysolsema;^ and although the locality given is simplj^ "Mexico," the 
1 Wagler, Isis, 1831, p. 530. 
