92 
DUSKY GROUSE. 
all with broad and short scutella, margined, but scarcely pectinate, the 
lateral scales not being prominent. Claws rather large, arched, com- 
pressed, rather obtuse. 
Plumage full, soft, rather blended, the feathers broad and rounded. A 
bare papillate space around the eye. Feathers on the upper part of the 
head narrow and elongated. Wings rather short, convex, much rounded ; 
the quills very strong ; the third longest, the fourth next, the third and 
sixth about equal, as are the first and seventh. Tail large, of ordinary 
length, rounded, of twenty feathers, which are broader toward the end, and 
abruptly rounded. 
Bill brownish-black, lighter at the base. Iris dark hazel. Toes bluish- 
grey, claws wood-brown. Papillar space around the eye vermilion. Upper 
parts blackish-brown, the wings lighter. The elongated feathers on the 
head greyish-brown ; the hind neck minutely undulated with bluish-grey ; 
the scapulars, inner secondaries, and smaller wing-coverts also minutely 
undulated with grey and brownish-red, and most of the latter with a small 
greyish tip ; the rump and upper tail-coverts obscurely undulated with grey. 
Alula, primary coverts and quills, clove-brown, the secondaries bordered 
and tipped with yellowish-grey : the primaries mottled with grey on their 
outer webs. The tail is black. The sides of the head, fore part and sides of 
the neck, and fore part of the breast greyish-black ; the lore and throat are 
barred with white ; the greyish-black of the breast passes into blackish-grey, 
and finally into dull bluish-grey; the feathers of the abdomen tipped with 
greyish-wliite, as are the lower rump and tail-coverts, which have moreover 
one or two narrow bars of the same ; the flanks undulated with black and 
marked with an elongated white spot along the central part and on the tip ; 
axillary feathers white, as are the inner wing-coverts ; the tarsal feathers 
brownish-grey. The concealed part of the plumage is light grey, unless on 
the feathers around the bare space on each side of the neck, which is of an 
orange colour, and which the bird inflates. 
Length to end of tail 22 inches, to end of wings 153 ; to end of claw 183 ; 
extent of wings 30 ; wing from flexure 93 ; tail 73 ; bill along the ridge 1, 
along the edge of lower mandible lf-f ; tarsus 1 T 9 2 ; hind toe its claw 
x 6 2 ; second toe l T \, its claw ^ third toe 1}?, its claw x | ; fourth toe lyV, 
its claw 
Female. 
The female is considerably smaller than the male. The bare papillar 
space over the eye is of much less extent, but, as well as the bill and feet, is 
coloured as in the male. The upper parts are dark greyish-brown, barred 
on the neck with grey, or the other parts barred and minutely undulated 
with yellowish-brown ; the wings as in the male, but lighter and more 
