OTOCORIS. 349 



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

 to New Mexico and northern Arizona. 



474c. O. alpestris arenicola HENSH. Desert Horned Lark. 

 6 2 . Wing averaging less than 4.00 in adult males, less than 3.80 in females. 



c 1 . Back not broadly or conspicuously streaked with dusky, and median 



lower parts never wholly pale yellowish. 



d 1 . General aspect of upper parts grayish (decidedly so in female) ; 

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

 usually pale yellow, the breast usually flecked with grayish 

 brown in both sexes. Male : Length about 6.50-6.75, wing 

 3.80-3.85 (3.83), tail 2.60. Female: Length about 5.80-6.00, 

 wing about 3.50, tail 2.35. Hob. Eastern and southeastern 

 Texas. 



474d O. alpestris giraudi HENSH. Texan Horned Lark. 

 d 2 . General aspect of upper parts decidedly ruddy (more brownish in 

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

 sexes. 



e l . Larger and less brightly colored, the male with hind-neck, 

 rump, etc., vinaceous-cinnamon. Male : 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). Hab. Table-lands of Mexico, north to 

 southern New Mexico and Arizona, and westward across 



southern California to the coast 474e. O. alpestris 



chrysolaema (WAGL.). Mexican Horned Lark. 

 e*. Smaller and brighter colored, the male with hind-neck, rump, 

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

 wing 3.70-4.10 (3.88), tail 2.60-2.90 (2.74). Female : Length 

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

 Eggs .80 X -59. Hab. Interior valleys of California. 



474/. O. alpestris rubea HENSH. Ruddy Horned Lark. 

 c 2 . Back broadly and conspicuously streaked or striped with dusky, and 

 median lower parts usually partly, sometimes wholly, pale yellow. 

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

 brown ground-color of back and scapulars much more strongly 

 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 6.25-6.50, wing 3.60-3.85 (3.69), tail 2.50-2.80 

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

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

 fornia and western Nevada 474^. O. alpestris strigata 



HENSH. Streaked Horned Lark. 



