OTOCORIS. 349 
Mountain district (including Great Basin) of United States, south 
to western Texas, New Mexico, and northern Arizona (also northern 
Mexico in winter). 
474c. O. alpestris arenicola Hens. Desert Horned Lark. 
6°. Wing averaging less than 4.00 in adult males, less than 3.80 in females. 
c'’. Back not broadly or conspicuously streaked with dusky, and median 
lower parts never wholly pale yellowish. 
ad, 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. Zggs 86x 61. Hab. Eastern and 
southeastern Texas. 
474d. O. alpestris giraudi HensH. Texan Horned Lark, 
d’, General aspect of upper parts decidedly ruddy (more brownish in 
female); breast usually pure white, without markings, in both 
seXes. 
e. 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 
(51.) chrysolema (WaGL.). Mexican Horned Lark. 
é*. 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 57. Hab. Interior valleys of California. 
(52.) 474f. O. alpestris rubea Hensu. Ruddy Horned Lark. 
e. 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 250-2.80 
(2.62). Hab, Coast district of Oregon, Washington Territory, 
and British Columbia; south, in winter, to portions of Cali- 
fornia and western Nevada.......... 4749. O. alpestris strigata 
(53.) Hensu. Streaked Horned Lark. 
