SPIZELLA. 419 
f?. Paler, the back light brown, with little if any rusty tinge, 
and more narrowly streaked with black, ear-coverts 
usually paler gray, contrasting less strongly with 
duller or more grayish white of superciliary stripe and 
throat, the wings and tail averaging decidedly longer ; 
length 5.25-5.90, wing 2.65-2.90 (2.80), tail 2.40-2.70 
(2.51). Eggs .67 x 50. Hab. Western North America, 
east to Rocky Mountains, north to beyond 60°, in 
summer; south, in winter, to southern Mexico. 
560a. S. socialis arizonz (Cougs). 
Western Chipping Sparrow. 
e*. Colors darker, the adult with crown dark chestnut and lower 
parts ashy, becoming whitish only on belly and under tail- 
coverts. (Otherwise like S. socialis in colors.) Wing 2.80, 
tail 2.45, culmen .40, tarsus .68. Hab. Highlands of Guate- 
mala and Honduras. 
S. pinetorum Satv. Guatemalan Chipping Sparrow.! 
@, Tarsus more than twice as long as culmen; no dusky streak be- 
hind eye. 
Adult: Top of head dull tawny brown, indistinctly streaked 
with darker brown; rest of head, including anterior por- 
tion of forehead, plain ashy, becoming gradually paler 
(almost white) on chin and throat; chest very pale gray- 
ish buffy, the sides and flanks similar but rather deeper; 
belly and under tail-coverts white; back grayish tawny, 
broadly streaked with black; middle wing-coverts tipped 
with pale buffy, but greater coverts without light tips; 
bill cinnamon; length (skin) about 4.50, wing 2.70, tail 
2.50, culmen .35, tarsus .72. Hab. New Mexico (vicinity of 
Silver City) and south over eastern part of Mexican plateau. 
564, S. wortheni Ripew. Worthen’s Sparrow.’ 
c. Wing not longer than tail (usually shorter). 
d', Upper parts with more or less of rusty, and top of head and 
hind-neck without dusky streaks. (Adult: Top of head with 
two rusty or sandy brownish lateral stripes and a dull grayish 
median stripe, the latter often indistinct, sometimes nearly 
obsolete; back streaked with black, on a uniform rusty, rusty 
and buffy grayish, or chiefly buffy grayish, ground; both rows 
of wing-coverts tipped with whitish or light buffy; a rusty 
streak behind eye, enlarged to a spot posteriorly, sides of head 
1 Spizella pinetorum Satvin, P. Z. 8. 1863, 189. 
2 It is somewhat doubtful whether this species is correctly placed in the section characterized by having the 
wing longer than the tail, since in the type, and only known, specimen the tail-feathers are very much worn. 
Tn case, however, of its being determined by perfect specimens to belong in the same section with 8. pusilla 
and allies, it can be easily recognized by its peculiar coloration, as described above. 
