CYRTONYX.. 193 
mottled, the feathers with white shaft-streaks, widening at end, 
and with a dusky spot on each side; belly dull white, without 
trace of markings; chest brownish gray, the feathers tipped 
and streaked with whitish. Length about 9.50-10.00, wing 
4.45-4.70, tail 4.10-4.70, tarsus 1.20-1.25. Eggs 1.24 * .94, sim- 
ilar to those of C. californica, but usually with deeper ground- 
color and larger and more distinct spots. Hab. Northwestern 
Mexico and contiguous portions of United States, from Arizona 
to western Texas, north to southern Utah. 
295. C. gambeli (Nurr.). Gambel’s Partridge. 
ce’. Crest buffy or ochraceous; throat white, spotted with black, and ter- 
tials blotched with chestnut, in adult male. 
Adult male: Sides of head streaked with black and white; hind- 
neck broadly streaked or striped with bluish gray and rusty ; 
upper parts mainly grayish brown, the tertials and longer 
scapulars chestnut, broadly edged on both webs with white; 
breast and belly bluish gray, the latter marked with roundish 
spots of white; flanks mainly deep cinnamon-rufous, the 
feathers edged, or spotted along edges, with white; wing 4.25- 
4.50, tail 3.50-3.60, tarsus 1.25. Hab. Western Mexico (vicinity 
of Mazatlan). 
e 
(28.) C. elegans (Lzss.), Elegant Partridge. 
a’, Tail less than two-thirds as long as wing; flanks broadly and sharply banded 
with black and white; tail-feathers brownish, barred with dusky and 
whitish ; scapulars and tertials spotted with black, the inner webs of the 
latter without light edging; wing less than 4.00; sexes alike in plumage; 
crest narrow, distinct from feathers of crown, but with webs not appressed. 
(Subgenus Philortyx GouLp.”) 
b.. Cheeks, chin, and throat white; bill black; wing 3.80-3.90, tail 2.40-2.60, 
tarsus 1.10-1.12. Hab. Southwestern Mexico (Plains of Colima, etc.). 
C. fasciata (GouLD). Banded Partridge.’ 
6’, Cheeks, chin, and throat black; bill brownish; wing 3.80, tail 2.00, tarsus 
1.00. Hab. Southeastern Mexico (Pueblo). 
C. personata Ripew. Black-faced Partridge.+ 
Gunus CYRTONYX Govunp. (Page 185, pl. LVI., fig. 2.) 
Species. 
Common CHaracters.—Adult males: Sides of head marked with bold black and 
white stripes, the chin and throat, and narrow collar across fore-neck (ascending to 
beneath crest), intense velvety black; longer feathers of crest uniform brownish; 
1 Ortyx elegans Less., Cent. Zool. 1832, pl. 61. Callipepla elegans Goup, Mon. Odont, 1850, pl. 18. 
3 Philortyx GoutD, Mon. Odont. 1850, 17. Type, Ortyx fasciatua GouLp. 
3 Ortyx fasciatus GouLn, P. Z. S. 1843, 133. 
4 Philortyx personatus Ripew., Auk, iii., July, 1886, 333. 
25 
