442 
SUBGENUS II. TETRAO. 
Flesh black. 
206. Tetrao cupido, L. Mottled ; tail rather short, much 
rounded, of eighteen plain dusky feathers ; primaries spotted 
with white outside. 
Male, neck furnished with wing-like appendages, &c. 
£06. bis. Tetrao urophasianus, Nob. Tail cuneiform, of twen- 
ty narrow, tapering, acute feathers. 
Male black. 
Female and young mottled. 
Cock of the plains , Tetrao urophasianus , Nob. Am. Orn . 
Hi. pi. 2i . fig. 2. 
Inhabits the extensive plains near the sources of the Mis- 
souri. The largest of North American Grouse. Size of 
T. urogallus, which replaces it in Europe. 
207. Tetrao obscurus, Sa} r . Tail slightly rounded, of twenty 
broad, rounded, blackish feathers; primaries unspotted. 
Male black. Female and young dusky, somewhat mottled. 
Dusky Grous , Tetrao obscurus , Nob. Am. Orn. iii.pl. is. 
female. 
Inhabits near the Rocky Mountains. Size of T. tetrix of 
Europe, of which it is the analogue. 
208. Tetrao canadensis, L. Tail moderate, rounded, of six- 
teen black, rounded feathers ; breast, flanks, and tail-coverts 
spotted with white. 
Male black, waved with gray ; throat and breast deep 
black. 
Female mottled ; throat and breast banded with black and 
rufous. 
Spotted Grous, Tetrao canadensis , Nob. Am. Orn. in. 
pi. 22. male. pi. 23. fig. l. female . 
Inhabits the north of America, extending to the Rocky 
Mountains : found in Maine, Michigan, and New-York. 
