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. 

 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. Sab. Eastern and southeastern 

 Texas. 



474d. O. alpestris giraudi Hensh. Texan Homed Lark. 

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

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

 sexes. 

 e 1 . 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). Sab. 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 2 . 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- Sab. 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 O. 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). Sab. Coast district of Oregon, Washington Territory, 

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

 fornia and western Nevada 474gr. O. alpestris strigata 



Hensh. Streaked Horned Lark. 



