232 CHECK-LIST OF NORTH AMERICAN BIRDS. 



Penthestes cinctus alascensis (PraL4.k). Alaska Chickadee. [739.] 



Poecila cinda alascensis Pra^ak, Orn. Jahrbuch, VI, 1895, 92. (Alaska; 

 Ochotsk = Alaska.) 



Range. — Shores of Okhotsk Sea, Siberia, and northern Alaska (St. Michael 

 and Kowak River) east to northwestern Mackenzie (Anderson River) in the 

 Hudsonian Zone. 



Penthestes hudsonicus hudsonicus (Forster). Hudsonian Chickadee. [740.] 



Parus Hudsonicus J. R. Forster, Philos. Trans., LXII, 1772, Art 29 

 (read June 18 and 25), 408, 430. (Severn River [west coast of] Hudson 

 Bay, Canada.) 



Range. — Breeds in Hudsonian and Canadian zones from Kowak Valley, 

 Alaska, and tree limit in central Mackenzie and northern Manitoba south to 

 central Manitoba and central Ontario (northern Michigan in July). In winter 

 casually to northern Illinois. 



Penthestes hudsonicus columbianus (Rhoads). Columbian Chickadee. [7406.] 



Parus hudsonicus columbianus Rhoads, Auk, X, No. 1, Jan., 1893, 23. 

 (Field, British Columbia.) 



Range. — Kenai Peninsula, Alaska, to southern British Columbia, northern 

 Montana, and Alberta. 



Penthestes hudsonicus littoralis (Bryant). Acadian Chickadee. [740a.] 



Parus hudsonicus, var. littoralis H. Bryant, Proc. Boston Soc. Nat. Hist., 

 IX, 1865, 368. (Yarmouth, Nova Scotia.) 



Range. — Breeds in Boreal zones from Labrador, central Quebec, and New- 

 foundland south to Nova Scotia, Maine, the mountains of northern Vermont 

 and central New Hampshire, and the Adirondacks of New York. In winter 

 casually to Massachusetts, Rhode Island, Connecticut, southern New York, 

 northern Pennsylvania, and northern New Jersey.^ 



Penthestes rufescens rufescens (Townsend). Chestnut-backed Chickadee. 



[741.] 



Parus rufescens J. K. Townsend, Journ. Acad. Nat. Sci. Phila., VII, Pt. ii, 

 [Nov. 21, 1837], 190. (forests of the Columbia river = Fort Vancouver, 

 Washington.) 



Range. — Pacific coast in Canadian and Hmnid Transition zones, from 

 Prince William Sound, Alaska, to Sonoma County, California, east to western 

 Montana. 



1 The Labrador bird has been separated as P. h. nigresccns C. W. Townsend 

 (Auk, XXXII, 1916, 74) but the alleged characters seem to represent the young 

 of P. h. littoralis in first winter plumage (.cf. Bangs, Bull. Mus. Comp. Zool., 

 LXX, No. 4, 348). 



