NORTH AMERICAN BIRDS. 
in the male (sometimes indicated in the female also). Hab. 
Eastern Mexico (south to San Luis Potosi) and lower Rio 
Grande Valley of Texas. 
293a. C. squamata castanogastris Brewst. 
Chestnut-bellied Scaled Partridge. 
b%. Crest lengthened, very distinct from general feathering of crown, very nar- 
row at the base, all the feathers enclosed between the more or less 
appressed webs of the anterior plume; sexes very different in plumage. 
(Subgenus Lophortyx Bonaparte.) 
c. Crest black; throat uniform black in adult males, and tertials without 
chestnut. 
d'. Flanks olive-brown or grayish, streaked with white. Adult male: 
Belly with black scale-like markings, and a central patch of 
chestnut; forehead buffy whitish, with black shaft-streaks; oc- 
ciput olive, or smoky brown. Adult female: Head without 
black or white markings, the prevailing color plain smoky 
grayish or brownish; belly without chestnut patch, and black 
scale-like markings less distinct. Young: Above finely mottled 
brownish, marked with whitish mesial streaks, widening at tip, 
and bordered along each edge with blackish; throat plain dull 
whitish ; belly dull white, faintly barred with grayish; chest 
dull grayish, with triangular whitish spots. Downy young: 
Dingy whitish, the upper parts tinged with pale rusty, and 
irregularly mottled, longitudinally, with deeper brownish; a 
broad stripe of deep brown from occiput down nape; ear-coverts 
with an indistinct dusky spot; lower parts plain dull whitish. 
Length about 9.50, wing 4.35-4.70, tail 4.10-4.70, tarsus 1.20- 
1.25. Hggs 1.26 X .98, white, buffy white, or pale buff, more or 
less distinctly sprinkled, speckled, spotted, or blotched with 
some shade of umber-brown. 
e. Upper parts deep smoky brown, the inner edges of tertials 
deep buffy or ochraceous; flanks deep olivaceous or smoky 
brown. Hab. Coast valleys of California and Oregon. 
294. C. californica (SHaw). California Partridge. 
e, Upper parts grayish brown, with inner edges of tertials 
buffy or whitish ; flanks olive-grayish, or grayish brown. 
Hab. Interior districts of California and western Oregon, 
south to Cape St. Lucas. 
294a. C. californica vallicola Ripew. 
Valley Partridge. 
@. Flanks rich chestnut, streaked with white. Adult male: Belly 
without scale-like markings, and with a central patch of black; 
forehead dusky ; occiput rufous. Adult female: Similar to that 
of C. californica vallicola, but flanks chestnut, and belly without 
seale-like markings. Young: Above grayish brown, minutely 
