BIRDS OP NORTH AND MIDDLE AMERICA 249 



DENDRORTYX LEUCOPHRYS LEUCOPHEYS (Gould) 



Guatemalan Long-tailed Partridge 



Adult (sexes alike in coloration). — Forehead, anterior part of crown, 

 and superciliaries light ivory yellow to pale pinkish buff; rest of crown 

 and occiput dull sepia tinged, especially terminally and posteriorly, with 

 russet ; feathers of nape and the interscapulars bright russet to bay promi- 

 nently edged with white, the longest, most posterior interscapulars with 

 the white replaced by neutral gray and these edgings broader ; median and 

 lesser upper wing coverts between bright buffy brown and Isabella color, 

 very slightly darker and more rufescent along the shafts; greater upper 

 wing coverts more rufescent, washed with orange-cinnamon, and with 

 numerous transverse irregular markings of pale Isabella color, each of 

 these markings bordered proximally with clove brown ; scapulars buffy 

 brown paling laterally to brownish olive-gray and darkening medially to 

 Saccardo's umber tinged with russet; secondaries pale cinnamon-brown 

 mottled and flecked with Front's brown to mummy brown, these mottlings 

 most strongly developed on the inner secondaries ; primaries externally 

 bright tawny with a slight orange tinge, their inner webs duller and in- 

 distinctly mottled with Front's brown, the darker color increasing toward 

 the inner edge of the feathers ; upper back like the interscapulars but 

 with the bright bay of their median part replaced by tawny-russet trans- 

 versely flecked with blackish, and with the gray lateral parts tinged 

 with buffy brown and indistinctly barred with dusky clove brown ; rest 

 of back, rump, and upper tail coverts buffy brown, indistinctly crossed 

 by fine dusky bars, the lower rump and upper tail coverts with whitish 

 transverse markings proximally and distally edged with blackish; lateral 

 rectrices bright russet, the median ones with this color largely restricted 

 to a broad indistinct shaft stripe the rest of the feathers abundantly crossed 

 by transverse zigzag markings of light ochraceous-bufT, each of which 

 markings is broadly edged on both sides by clove brown ; suboculars and 

 auriculars dull sepia; chin and upper throat white; sides of throat and 

 lower throat bright russet to tawny-russet, each feather edged with light 

 neutral gray; breast feathers similar but with the edges broader and 

 darker — neutral gray — and the centers paler — tawny-russet to tawny; 

 upper and lateral parts of abdomen and sides pale grayish buffy brown, 

 most grayish on the upper abdomen, and with tawny to ochraceous-tawny 

 shaft stripes; lower middle of abdomen, flanks, and under tail coverts 

 darkening, especially posteriorly, to dusky olive-brown; under wing 

 coverts dull cinnamon-brown ; bare skin around eye, tarsi, and toes orange- 

 red ; bill black, lower mandible orange below ; iris grayish olive. 



Other plumages unknown. 



Adult male. — Wing 146.3; tail 128; culmen from the base 18.1 ; tarsus 

 53.3; middle toe without claw 49.1 mm. (1 specimen). 



