374 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult 77iale.— Length (skins), 231-2ri9 (254); wing, 138.5-151(143.5); 

 tail, 130.5-143.5 (138); exposed culmen, 18-20.5 (19.5); depth of bill 

 at base, 9.5-11 (10); tarsus, 33.5-36 (34.5); middle toe, 16.5-18.5 (17)." 



Adulf fewale.^ljengih (skins), 246.5-269 (254.5); wing-, 134.5-144 

 (140.5); tail, 131-139.5 (135); exposed culmen, 17.5-20.5(19); depth 

 of lull at base, 9.5-10.5 (10); tarsus, 32.5-33.5 (33); middle toe, 16.5- 

 17.5 (17).^ 



Interior districts of northern California'' (northern Sierra Nevada, 

 upper Sacramento Valley, Mount Shasta, etc.), north through central 

 Oregon and Washington to interior of British Columbia. 



Ferisoreus canadensis (not Corvus canadensis Linnaeus) Newberry, Rep. Pacific 

 R. R. Surv., X, pt. vi, 1857, 85 (upper Sacramento Valley and Fort Reading, 

 California; Columbia R. ). — Feilner, Ann. Rep. Sinithson. Inst, for 1864 

 (1865), 427 (Lassens Butte and Shasta Butte, n. California; habits). — Cooper, 

 Orn. Cal., 1870, 307, part (n. California and higher Sierra Nevada). 



Perisoreus canadensis canadensis Howe, Osprey, new ser., i, 1902, 104, part (crit. ).'^ 



Plerisoreusi obscitrus (not Perisoreus canadensis, var. obscurus Ridgway) Hen- 

 SHAW, Orn. Rep. Wheeler's Surv., 1879, 308 (n. e. California to Columbia 

 R.; habits; crit.).— Ridgway, Man. N. Am. Birds, 1887, 360, part. 



Perisoreus obscurus Ridgway, Nom. N. Am. Birds, 1881, no. 298, part. — Ameri- 

 can Ornithologist's Union, Check List, 1886, no. 485, part.- — Townsend, 

 Proc. U. S. Nat. Mus., x, 1887, 211, part (Mount Shasta, near timber line). — 

 Merrill, Auk, v, 1888, 261 (Fort Klamath, e. Oregon). — Belding, Land 

 Birds Pacific Distr., 1890, 111, part (upper Sacramento Valley, Lassens 

 Butte, Shasta Butte, Camp Bidwell, etc.). — Bendire, Life Hist. N. Am. 

 Birds, ii, 1895, 394, part.— Merriam, North Am. Fauna, no. 16, 1899, 119 

 (Mount Shasta, 5,900-6,600 ft.). 



Perisoreus canadensis obscurus Mearns, Bull. Nutt. Orn. Club, iv, Oct., 1879, 195 

 (Fort Klamath, e. Oregon). — Coues, Check List, 2d ed., 1882, no. 361, part. 



Perisoreus canadensis {y. obscurus f) Ridgway, Proc. U. S. Nat. Mus., 1, 1879, 423 

 (Summit Meadows, California). 



{Perisoreus canadensis var. cajntaUs'] h. obscurus Coues, Birds N. W., 1874, 221, 

 part (in synonymy) . . 



P{erisoreus'] clanadensisl obscurus Coues, Key N. Am. Birds, 2d ed., 1884, 425, 

 part. 



Perisoreus obscurus griseus Ridgway, Auk, xvi, July, 1899, 255 (Keechelus Lake, 

 Kittinas Co., e. Washington; coll. U. S. Nat. Mus.). — American Ornithol- 

 ogists' Union Committee, Auk, xviii, 1901, 302 (Check List no. 485a). 



Plerisoreusl olbscurus'] griseus Bailey (Florence M.), Handb. Birds W. U. S., 

 1902, 279. 



« Eight sx^ecimens. 



'' Six specimens. 



'Specimens from northern California (Mount Shasta, Camp Bidwell, etc.) and 

 adjacent parts of Oregon (Fort Klamath) are not typical, being both browner and 

 smaller than examples from eastern Washington and British Columbia. They are, 

 however, nearer the latter than to the coast form (true P. obscurus). 



<i Comment on the critical remarks in the paper cited are quite unnecessary. 



