PEUCHA. 429 
lower parts light grayish brown, or dull grayish buff, paler on 
throat and belly; a distinct broad black streak on each side of 
throat, bordered above by a maxillary stripe the same color as 
throat; a rusty postocular streak. Young: Upper parts, including 
top of head, dull brownish, streaked with darker; lower parts 
dingy pale grayish buff, the chest and sides streaked with dusky; 
otherwise, much like adult.) 
@. Feathers of back largely rusty or chestnut centrally ; prevailing 
color of upper parts dull brownish. 
é. Smaller: Length about 5.50-5.75, wing 2.20-2.40 (2.32), tail 
2.50-2.70 (2.58), culmen .48~-.50 (.49), depth of bill at base 
.20-.22 (.21), tarsus .75-.80 (.79). Hyggs .78 x .60, plain 
bluish white. Hab. California. 
580. P. ruficeps (Cass.). Rufous-crowned Sparrow. 
é. Larger: Length 6.10-6.60, wing 2.50-2.80 (2.60), tail 2.75-3.00 
(2.89), culmen .50.-58 (.52), depth of bill at base .25-.27 
(.26), tarsus .78-.90 (.81). (Colors rather less bright than 
in P. rujiceps, with the rusty less bright and the lower 
parts rather less fulvous, but the difference very slight 
and not entirely constant.) est on ground, in or by 
tufts of grass. Eggs 3-4, .83 x .60, plain white. Hab. 
Tablelands of Mexico, from Oaxaca north to Lower 
California, southern Arizona and New Mexico, and west- 
ern Texas. 
580a. P. ruficeps boucardi (Sct.). Boucard’s Sparrow. 
@. Feathers of back dull brownish (not rusty) centrally, with black- 
ish shaft-streaks; prevailing color of upper parts ashy, es- 
pecially on back and scapulars; measurements essentially as 
in P. boucardi. Hab. Kastern Mexico (highlands of Vera Cruz, 
etc.), north to central Texas. 
580d. P. ruficeps eremceca Brown. Rock Sparrow. 
b?, Lesser wing-coverts uniform bright cinnamon-rufous (except in first 
plumage). 
Adult: Top of head streaked broadly with dark rufous or rusty 
(sometimes nearly uniform rufous) and narrowly with grayish, the 
latter also forming a more or less distinct median line; a broad 
superciliary stripe and sides of head generally light grayish ; upper 
parts brownish gray or light grayish brown, the back and scapulars 
streaked with blackish; lower parts grayish white; a blackish 
streak along each side of throat, another from corner of mouth, and 
a rusty postocular streak. Young: Upper parts, including whole 
top of head, light brown, broadly streaked with blackish ; lesser 
wing-coverts dusky centrally, margined with pale brownish buff; 
lower parts whitish, the chest and sides broadly streaked with 
dusky. Length 5.70-5.90, wing 2.40-2.55, tail 2.80-3.00, tarsus 
