144 B1RV NAMES. [No. 41. 



of dull black ; on the back arrow-head or heart-shaped spots of 

 light gray ; the loose feathers of the neck (hackles) and those 

 sweeping backward from shoulder regions boldly mottled red- 

 dish brown and black, and streakily marked with light gray ; at 

 either side of neck a glossy black " ruff " or " shoulder-knot," 

 the feathers forming these being cut almost squarely at their 

 broadened ends, and differing greatly from the long, narrow^ 

 neck-feathers of the pinnated grouse (No. 38) ; upper neck, back' 

 and sides of head, and crest, a speckled mixture of the bird's tints 

 generally ; tail light gray with faint 'tints of yellowish brown, 

 broadly spreading like a fan, crossed by wavy black lines, and 

 near its extremity by a broad black bar ; much of upper plumage 

 minutely flecked with black. Belly and breast mottled or broken- 

 ly barred, and feathering of flanks more broadly and decidedly 

 barred with dusky brown and white ; lower neck, sides of breast, 

 and much of under parts tinged, or dulled, with light yellowish 

 brown, a richer yellowish tint showing itself back of the vent ; 

 throat buff ; front of neck crossed by narrow, dark brown, white, 

 and bright tan markings. Toes, and naked part of leg just above 

 them, gray ; remainder of leg covered with hairy feathers of 

 brownish white. Bill " horn color," dark above and light below. 



Female. Throughout quite similar to male, but upper parts 

 more brownish, chiefly, perhaps, about head and tail ; the light 

 arrow-head spots of the back washed with brown ; the front of 

 neck between the ruffs noticeably reddish brown or bright tan, 

 without the narrow dark brown and white markings ; neck-tufts 

 very considerably smaller than in male, less cleanly black, and 

 without noticeable gloss or lustre. 



Measurements of species as frequently given: length eigh- 

 teen inches ; extent twenty-three or twenty-four inches. Dr. 

 Coues, in his Key of 1884, gives length sixteen to eighteen inches ; 

 extent twenty-three inches. 



The birds just described measure and weigh as follows : 

 Male : length nineteen and three eighth inches ; extent twenty- 

 four and a quarter inches ; tail from point of " pope's nose " to 

 end of central feathers, six and five eighth inches ; weight twenty- 

 two ounces. Female : length seventeen and one eighth inches ; 



