. Annual report. 1st-12th, 1867-1878. Geology. 654 GEOLOGICAL SURVEY OF THE TERRITORIES. and also from the author's observations, both in the field and from speci- mens in his own collection. Among gallinaceous fowls the Grouse are known by certain char- acters, such as the narrow and naked supra-pal- petral processes; by the feathers fitting the exter- nal nasal fossae; by the cervical and inflatable air- sacs of Cupidonia and others; and finally by the feathered tarsi, the naked toes, with the peculiar horny processes, fringing their edges In Lago- pus the feathers of the tarsi are dense, an
. Annual report. 1st-12th, 1867-1878. Geology. 654 GEOLOGICAL SURVEY OF THE TERRITORIES. and also from the author's observations, both in the field and from speci- mens in his own collection. Among gallinaceous fowls the Grouse are known by certain char- acters, such as the narrow and naked supra-pal- petral processes; by the feathers fitting the exter- nal nasal fossae; by the cervical and inflatable air- sacs of Cupidonia and others; and finally by the feathered tarsi, the naked toes, with the peculiar horny processes, fringing their edges In Lago- pus the feathers of the tarsi are dense, and carried to the very claws, this genus thus forming an exception to the last observation. In the arrangement of the genera we adopt the high authority of the authors of the History of North American Birds (A Hist. N. A. Birds, Boston, 1874, Baird, Brewer, and Bidgway). In this work we find the following divisions given us, with some few modifications, which the reader will readily recognize:. «!*«• Centrocercus Family Tetraonidae. (Grouse.) 1. Genus Canace. {American Wood Grouse.) 2. Genus Bonasa Grouse.) 3. GenusLagopus. (The Ptar ) Subgenus Canace. Subgenus Dendra- gapus. f Species: II. Canace canadensis. : (Spruce Grouse.) I 2. Canace canadensis frank- (. lini. (Franklin's Grouse.) (I. Canace obscura. (Dusky Grouse.) I 2. Canace obscura fuliginosa. (Oregon Dusky Grouse.) 3. Canace obscura richard- soni. (Richardson's Dusky \, Grouse.) Species: 1. Bonasa umbella. (Buffed Grouse.) (Ruffed | 2. Bonasa umbella nmbelloides. (Gray Ruffed j Grouse.) I 3. Bonasa umbella sabinii. (Oregon Ruffed {. Grouse.) ( Species: j 1. Lagopus albus. (The Willow Ptarmigan.) ) 2. Lagopus rupestris. (Rock Ptarmigan.) 13. Lagopus leucurus. (White-tailed Ptarmigan.) ( Species: (Pin- j 1. Cupidonia cupido. (Prairie Chicken.) "^ 2. Cupidonia cupido pallidi cincta. (Lesser Prairie y Vhicken.) ( Species: 5. GenusPedioecetes. (Sharp-)1- Ff\ff^s phasianellus. (Northern Sharp- fniler
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