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 mule without ruibus or chestnut on tianks. 



Adult male: Crest plain brownish, spotted with black anteriorly; sides of 

 head chiefly pure white, relieved by a Btripo (widening posteriori}^) of 

 dark plumbeous extending from corner of mouth backward to beneath 

 cars, throwing off a branch (darker in color) on each side of forehead, 

 and a postocuiar black stripe or elongated patch ; scapulars, etc., marked 

 with broad medial streaks of buffy or whitishj 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 whiiish, 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 1.2G X ■^■^^ plain white. Hah. Western and central 

 Mexico, from Mazatlau and Valley of Mexico north to western Texas, 

 New Mexico, and Arizona. 



296. C. montezumae (Vui.). Massena Partridg-e. 



a'. Adult males with flanks varied with ruibus or chestnut. 



t'. Adult male with flanks rich chestnut, slightly varied with black and 

 plumbeous. Hab. Guatemala and southern Mexico. 



C. ocellatus Gould. Ocellated Partridge.' 

 v. Adult male with flanks plumbeous, barred and spotted with chestnut. Hub. 

 " Mexico." 



C. sallaei Vkku. Salle's Partridge.'-' 



Genus DENDRAGAPUS P^i.liot. (Pago 18G, pi. LVII., figs. 1,2.) 



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

 speckled, or, more i-arely, spotted with dark brown.) 



> Onyx ocellatus Ooi;i,n, P. Z. S. IS.'iG, 75 (Quatomala). Ci/rtoni/x ocellatim Golld, Mod. OJoiit. 1S50, 

 pi. 8. 



Cyrtonyx tumichrnuli Imwr., Ann. I.yc. N. Y. i. 1877, 51 (Tohunntopco). 



Obs. — There arc (lifTorcncos observable between two males from Ouateranl.a on the' one lianil, ami one from 

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

 require recognition as a geographical race {C. nfi-Jtatut nitmit'hrantt). 



'•' Cyrtonyx unllici VunnnAfX, Arcana NaturiB, i. ISCO, pi. 4. 



