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 occij)ut 

 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. Egg (identification very doubtful) : 1.21 X -90) plain white. 

 Hah. Western and central Mexico, from Mazatlan and Valley of Mexico 

 north to western Texas, New Mexico, and Arizona. 



296. C. montezumse (Via.). Massena Partridge. 



a*. Adult males with flanks varied with rufous or chestnut. 



h^. Adult male with flanks rich chestnut, slightly varied with black and 

 plumbeous. Hah. Guatemala and southern Mexico. 



C. ocellatus Gould. Ocellated Partridge.^ 

 h"^. Adult male with flanks plumbeous, barred and spotted with chestnut. Hah. 

 "Mexico." 



C. sallsei Vebr. Salle's Partridge.^ 



Genus DENDRAGAPUS Elliot. (Page 186, pi. LYII., figs. 1, 2.) 



{Nest on ground in woods. Eggs about 8-15, buffy or pale brownish, sprinkled, 

 speckled, or, more rarely, spotted with dark brown.) 



1 Ortyx ocellatus GonLD, P. Z. S. 1836, 75 (Guatemala). Cyrtonyx ocellatus Gould, Mon. Odont. 1850, 

 pi. 8. 



Cyrtonyx sumichrristi Lawr., Ann. Lye. N. Y. i. 1877, 51 (Tehuantepec). 



Obs. — There are differences observable between two males from Guatemala on the' one hand, and one from 

 Tehuantepec (the type of C aumicTirasti) on the other. If these should prove constant the latter bird would 

 require recognition as a geographical race (C. ocellatus sumichraati). 



2 Cyrtonyx salleei Verreaux, Arcana Naturse, i. 1860, pi. 4. 



