THE SHARP-WINGED GROUSE. 57 



Adult Female. — Distinguished by having the chin and throat 

 rufous, spotted with black. 



Eange. — The west side of the northern Rocky Mountains, 

 extending westwards to the coast ranges. 



Habits — The habits of this species are apparently very simi- 

 lar to those of the Canada Grouse, which it replaces to the west 

 of the Rocky Mountains. It is found in the almost inpene- 

 trable and densely-timbered mountain ranges, generally, at an 

 altitude of from 5,000 to 9,000 feet, in the neighbourhood of 

 running water or swampy valleys. It is said to be a remark- 

 ably fearless and stupid bird, frequently allowing itself to be 

 knocked off the trees with sticks or stones, and it is often 

 caught by hand. 



THE SHARP-WINGED GROUSE. GP:NUS FALCIPENNIS. 



Falcipennis^ Elhot, P. Ac. Philad. 1864, p. 23. 



Type, F. falcipennis (Hartl.). 



Toes naked and pectinate along the sides. Tail moderately 



long and rounded, composed of sixteen feathers. The outer 



Uight-feathers atteiiuated and sickle-shaped. 



I. THE SHARP-WINGED GROUSE. FALCIPENNIS FALCIPENNIS. 



Tetrao falcipennis, Hartl. J. f. O. 1855, p. 39. 



Falcipennis hartlaiibi, Elliot, Proc. Acad. Philad. 1864, p. 23; 



id. Monogr. Tetraon. pi. xi. (1865). 

 Falcipennis falcipennis, Ogilvie-Grant, Cat. B. Brit. Mus. xxii. 

 p. 72 (1893). 



Adult Male.— Chest uniform smoky-black. Total length, 16*3 

 inches; wing, 7-2; tail, 47; tarsus, 1*4. 



Adult Female. — Chest black, barred with buff. Total length, 

 147 inches; wing, 7*2; tail, 4*3; tarsus, 1-4. 



Range. — North-eastern Siberia, Kamtschatka, and Saghalien 

 Island. 



In general appearance and size this species resembles the 



