16) CHECK-LIST OF NORTH AMERICAN BIRDS. 
296. Cyrtonyx montezumz (VIG.). 
Massena Partridge. 
Ortyx montesume Vicors, Zool. Journ. V. 1830, 275. 
Cyrtonyx montezsume STEJN. Auk, II. Jan. 1885, 46. 
[B 477, C 394, R 485, C 578.] 
Geoc. Dist.— Tablelands of Mexico, from the city of Mexico 
north to western Texas, New Mexico, and Arizona. 
SuBFAMILY TETRAONINAL. GRouseE. 
Genus DENDRAGAPUS ELLiot. 
SuBGENUS DENDRAGAPUS. 
Dendragapus Ev.iot, Pr. Ac. Nat. Sci. Phila. 1864, 23. Type, 
Tetrao obscurus SAY. 
297. Dendragapus obscurus (Say). 
Dusky Grouse. 
Tetrao obscurus Say, Lone’s Exp. II. 1823, 14. 
Dendragapus obscurus ELLIOT, Pr. Ac. Nat. Sci. Phila. 1864, 23. 
[B 459, C 381, R 471, C 557-] 
Geroc. Dist.— Rocky Mountains, from central Montana and 
southeastern Idaho to New Mexico and Arizona, eastward to the 
Black Hills, South Dakota, and westward to East Humboldt Moun- 
tains, Nevada. 
297 a. Dendragapus obscurus fuliginosus Ripcw. 
Sooty Grouse. 
Canace obscura var. fuliginosa RipGcw. Bull. Essex Inst. V. Dee. 
1873, 199. 
Dendragapus obscurus fuliginosus Rrpcw. Pr. U.S. Nat. Mus. 
WATT 88a, i208: 
[B—, C 3814, R. 4712, C 559.] 
Geroc. Dist.— Northwest coast mountains, from California to 
Sitka, east to Nevada, western Idaho, and portions of British 
Columbia. 
