194 NORTH AMERICAN BIRDS. 
upper parts brownish, more or less barred and spotted with black, and conspicu- 
ously streaked with whitish, buff, or rufous; outer webs of quills spotted with 
white; anal region, thighs, and lower tail-coverts uniform velvety black. 
a, Adult male without rufous or chestnut on flanks. 
Adult male: Crest plain brownish, spotted with black anteriorly; sides of 
head chiefly pure white, relieved by a stripe (widening posteriorly) of 
dark plumbeous extending from corner of mouth backward to beneath 
ears, throwing off a branch (darker in color) on each side of forehead, 
and a postocular black stripe or elongated patch ; scapulars, etc., marked 
with broad medial streaks of buffy or whitish; entire sides and flanks 
dark plumbeous, marked with numerous round spots of pure white; 
belly and middle line of breast dark chestnut. Adult female: Prevailing 
color light pinkish cinnamon, the upper parts streaked and barred much 
as in the male; head -without white or black stripes; sides with a few - 
irregular streaks or bars of black. Young: Similar to adult female, but 
lower parts dull whitish, many of the feathers, especially on breast and 
sides, with transverse spots of blackish, on both webs. Downy young: 
Head pale brown, becoming gradually whitish on throat, the occiput 
with a broad patch of chestnut; a blackish streak behind eye; upper 
parts rusty brownish, indistinctly spotted with dusky, the rump bor- 
dered along each side by a whitish stripe; lower parts nearly uniform 
dull white. Length about 8.75, wing 4.90-5.30, tarsus 1.05-1.10, middle 
toe .85-.90. Eggs 1.26 x .94, plain white. Hab. Western and central 
Mexico, from Mazatlan and Valley of Mexico north to western Texas, 
New Mexico, and Arizona. 
296. C. montezumz (Via.). Massena Partridge. 
a, Adult males with flanks varied with rufous or chestnut. 
o. Adult male with flanks rich chestnut, slightly varied with black and 
plumbeous. Hab. Guatemala and southern Mexico. 
C. ocellatus GouLp. Ocellated Partridge.! 
b?, Adult male with flanks plumbeous, barred and spotted with chestnut. Zab. 
“ Mexico.” 
C. sallei Vzrr. Salle’s Partridge.’ 
Gznus DENDRAGAPUS Exuior. (Page 186, pl. LVIL,, figs. 1, 2.) 
(Nest on ground in woods. Hggs about 8~15, buffy or pale brownish, sprinkled, 
speckled, or, more rarely, spotted with dark brown.) 
4 Ortyx ocellatus Gouxp, P. Z. 5. 1836, 75 (Guatemala). Cyrtonyx ocellatus GouLp, Mon. Odont. 1850, 
pl. 8. 
Cyrtonyx sumichrasti Lawr., Ann. Lye. N. Y, i. 1877, 51 (Tehuantepec). 
Oxzs.—There are differences observable between two males from Guatemala on the’ one hand, and one from 
Tehuantepec (the type of C. sumichrasti) on the other. If these should prove constant the latter bird would 
require recognition as a geographical race (C. ocellatus sumichrasti), 
2 Cyrtonyx sallei VERREAUX, Arcana Natura, i. 1860, pl. 4. 
