BIRDS OP NORTH AND MIDDLE AMERICA 241 



dd. Auriculars sooty gray; ground color of underparts gray; gray of breast 

 fairly dark (western Guatemala, El Salvador, Honduras, and north- 

 western Nicaragua) D. leucophrys nicaraguae (p. 250) 



'66. Chin and throat black. 



c. With prominent white superciliary and malar stripes. 



d. Chestnut median stripes on breast feathers small and faint, these stripes 

 absent on breast feathers. 

 e. Lower back and rump barred with black; thighs and flanks grayish 



brown (Morelos) D. macroura griseipectus (p. 245) 



ee. Lower back and rump with no or little black; thighs and flanks olive- 

 brown (northwest Jalisco) D. macroura diversus (p. 246) 



dd. Chestnut median stripes on breast feathers large and prominent. 



e. General color of back and rump decidedly olive-brown with little or 

 no whitish transverse flecking (Michoacan and Guerrero highlands). 



D. macroura striatus (p. 247) 

 ee. General color of back and rump not decidedly olive-brown but gray- 

 brown with a slightly olive tinge, and abundantly cross-flecked with 



whitish D. macroura macroura (p. 243) 



cc. Superciliary and malar stripes not white and conspicuous but heavily suffused 

 with brownish D. macroura oaxacae (p. 248) 



DENDRORTYX BARBATUS Gonld 



Bearded Wood Partridge 



Adult (sexes alike in color). — Forehead and anterior part of crown 

 buffy brown, darkening to buffy brown and pale sepia on the hindcrown 

 and occiput, the feathers of the forehead with pale buffy shafts which,, 

 being largely uncovered, show noticeably ; feathers of hindneck mouse gray 

 to dark mouse gray with terminally broadening shaft streaks of russet to 

 chestnut, these streaks subterminally obscurely blotched with dusky 

 chaetura drab ; anterior interscapulars similar but with the chestnut areas 

 broader, the gray restricted to the margins of the feathers and these 

 margins subterminally crossed by black spots; posterior interscapulars 

 similar but with the terminal part of the edges, distal to the black marks, 

 white, and the more proximal, grayish part much suffused with chestnut ; 

 scapulars, all but the outermost upper wing coverts, and the feathers of 

 upper back buffy brown to olive-brown heavily blotched with fuscous- 

 black and barred irregularly with the same and with light pinkish cin- 

 namon to pinkish buff and marginally with white, the feathers of the 

 upper back with a chestnut wash along the shafts ; outermost upper wing 

 coverts with no white and little blackish; the secondaries russet, ex- 

 ternally edged and tipped with pinkish buff to cinnamon-buff, these 

 areas minutely speckled with blackish, and the feathers crossed by 8 to 

 10 flatly V-shaped bars of chaetura drab, the russet immediately distal 

 to each bar paler than elsewhere; primaries and alula cinnarnon-russet, 

 their outer webs barred with pale chaetura drab, their inner webs ex- 

 tensively mottled and washed with the same; back, lower back, rump, 

 and upper tail coverts buffy brown to olive-brown, tipped and sub- 



