428 NORTH AMERICAN BIRDS. 
Indiana (to at least 40°), west to middle northern 
TEXAS vicssissesse 575a. P. zestivalis bachmani (Avp.). 
Bachman’s Sparrow. 
e, Entire lower parts pale dull grayish buff, paler on throat, the 
middle of the belly sometimes nearly white. 
f’. Larger and lighter colored. Adult: Above dull light 
grayish brown, more or less mixed with rusty, the 
back, and sometimes top of head, streaked with black. 
Young: Above dull light grayish buff, everywhere 
broadly streaked with dusky; lower parts pale dingy 
buff, the throat, chest, and sides of breast streaked 
with dusky; greater wing-coverts broadly edged with 
light tawny. Length about 6.00-6.50, wing 2.45'-2.75 
(2.55), tail 2.50'-2.90 (2.70), culmen .51-.55 (.53), depth 
of bill at base .25-.28 (.26), tarsus .60-.65 (.62). Eggs 
.72 X .58, plain pure white. Hab. Northern, central, 
and western Mexico, south to Guanajuato and Colima, 
north to southern Arizona and Rio Grande Valley. 
576. + 577. P. mexicana (Lawr.). 
Mexican Sparrow.’ 
y*. Smaller and darker colored; upper parts heavily streaked 
with blackish on a grayish and rusty ground; wing 
2.50-2.55, tail 2.60-2.65. Hab. Southeastern Mexico 
(Vera Cruz, etc.). 
P. botterii Sct. Botteri’s Sparrow.’ 
d?, Middle tail-feathers with decided indications of transverse bars, 
projected from a dark brown median stripe; flanks broadly 
streaked with dark brownish. 
Adult: Above grayish, spotted with clear umber-brown and 
dusky, the upper tail-coverts with subterminal transverse, 
more or less crescentic, spots of dusky; beneath dull gray- 
ish white, faintly tinged with brownish on chest and sides; 
length 6.00-6.75, wing 2.50-2.70, tail 2.65-2.90, culmen .50- 
.53, tarsus .77-.82. Eggs .73 x .56, plain pure white. Hab. 
Southwestern border of United States (Texas to Arizona) 
and northern Mexico; north, in summer, to middle Kansas. 
578. P. cassini (Woopu.). Cassin’s Sparrow. 
@. Edge of wing dull white or grayish. (Adult: Crown chiefly ferru- 
ginous, often quite uniform ; upper parts grayish or grayish brown, 
the back and scapulars broadly streaked with rusty or brown; 
1The minimum measurements of wing and tail, as given above, are very unsatisfactory, the specimens from 
which they were taken having the quills and tail-feathers much worn. The true average, therefore, should be 
considerably higher—at least 2.60 for the wing and 2.75 for the tail. ; 
2 Includes also P. arizone Rinew., which proves to be not separable. 
8 Zonotrichia botterit Scx., P. Z. S. 1857, 214. Peucea botterii Scu., Cat. Am. B, 1862, 116, 
