OTOCORIS. 349 



Mountain district (including Great Basin) of United States, south 

 to western Texas, New Mexico, and northern Arizona (also northern 

 Mexico in winter). 



474'>. O. alpestris arenicola IIensh. Desert Horned Lark. 

 b'. Win" averaging loss than 4.00 in adult males, less than 3.80 in feniulos. 



c'. Back not broadly or conspicuously streaked with dusky, and median 

 lower parts never wholly pale j-ellowish. 

 d^. General aspect of upper parts grayish (decidedlj- so in female) ; 

 male with breast, as well as throat, superciliary stripe, etc., 

 usually pale j-ellow, the breast usually flecked with grayish 

 brown in both sexes. Male: Length about 6.50-G.75, wing 

 3.S0-3.S5 (3. S3), tail 2.G0. Female: Length about 5.80-G.OO, 

 Ming about 3.50, tail 2.35. E.jjs .86 X 61. Hab. Eastern and 

 southeastern Texas. 



474(Z. O. alpestris giraudi IIexsh. Texan Horned Lark. 

 (P. General aspect of upper parts decidedly ruddy (more brownish in 

 ' female) ; breast usually pure white, without markings, in both 



sexes, 

 e'. Larger and less brighllj' colored, the male with hind-neclc, 

 rumj). etc., vinaceous-cinnamon. 3fale : Length about 

 6.75-7.25, wing 3.80-4.15 (3.99), tail 2.80-3.00 (2.91). Fe- 

 male: Length about 6.50-7.00, wing 3.75-3.80 (3.78), tail 

 2.70-2.80 (2.75). Jlab. Table-lands of Mexico, north to 

 southern Xew Mexico and Arizona, and westward across 



southern California to the coast 474c. O. alpestris 



(51.) chrysolaema (AVagl.). Mexican Horned Lark. 

 e'. Smaller and brighter colored, the male with hind-nei-k. rump, 

 etc., rich tawny cinnamon. JIale : Length about 6.50-7.00, 

 wing 3.70-4.10(3.88), tail 2.G0-2.90 (2.74). Female : Length 

 about 6.00-6.50, wing 3.50-3.70 (3.61), tail 2.35-2.65 (2.49). 

 F'j'js .80 X -57. Hab. Interior valleys of California. 

 (.52.) 474/'. O. alpestris rubea IIensh. Ruddy Homed Lark. 

 c'. Back liroailly and conspicuously streaked or striped with dusky, and 

 median lower parts usuall}' partly, sometimes wholU", pale yellow. 

 Otherwise much like 0. rubea, but dull olive-brown or gra3-ish 

 brown ground-color of back and scapulars much more stronglj' 

 contrasted with vinaceous-cinnamon of hind-neck, rump, etc., 

 the female with upper parts more olivaceous and much more 

 sharply and conspicuously streaked. Male: Length about 

 6.75-7.25, wing 3.70-4.10 (3.94). tail 2.70-3 05 (2.88). Female: 

 Length about 0.25-6.50, wing 3.60-3.85 (3.69), tail 2 50-2.S0 

 (2.62). Hab. Coast district of Oregon, Washington Territory, 

 and British Columbia; south, in winter, to portions of Cali- 

 fornia and western Nevada •*"-!,';■ O. alpestris strigata 



(.53.) Hensu. Streaked Horned Lark. 



