192 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 1 . Crest black ; throat uniform black in adult males, and tertials without 



chestnut. 



d l . 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. Eggs 1.23 X -94, white, buffy white, or pale buff, more or 

 less distinctly sprinkled, speckled, spotted, or blotched with 

 some shade of umber-brown. 



e l . 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, Oregon, and 

 Washington Territory. 



294. C. californica (SHAW). California Partridge. 



e 2 . Upper parts grayish brown, with inner edges of tertials buffy 



or whitish ; flanks olive-grayish, or grayish brown. Hab. 



Interior districts of California and Oregon, south to Cape 



St. Lucas 294a. C. californica vallicola RIDGW. 



Valley Partridge. 



d*. 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 

 scale-like markings. Young : Above grayish brown, minutely 



