ORDER PASSERES. Sail 
b. Penthestes gambeli baileye (GRINNELL). Bailey’s Mountain Chickadee. 
[738a.] 
Parus gambeli baileye GRINNELL, Condor, X, 1908, 29. (Mount Wilson, 
at 5500 feet, Los Angeles Co., California.) 
Rance.— Mountains of Great Basin region and northern Lower California, 
Breeds in Canadian and Transition zones from the Maury Mountains, Ore- 
gon, south over Nevada and eastern California to the San Pedro Martir 
Mountains, Lower California. 
Penthestes cinctus (BopDAERT). 
RanGE.— Siberia from the Yenesei River eastward to Alaska and 
Anderson River, Mackenzie. 
a. [Penthestes cinctus cinctus. Extralimital.] 
b. Penthestes cinctus alascénsis (PRAzAK). Alaska Chickadee. [739.] 
Pecila cincta alascensis Prazkx, Orn. Jahrbuch, VI, 1895, 92. (Alaska.) 
RanGE.— Shores of Okhotsk Sea, Siberia, and northern Alaska (St. 
Michael and Kowak River), and east to northwestern Mackenzie (Anderson 
River) in Hudsonian Zone. 
Penthestes hudsénicus (ForsTER). 
RanGE.— Northern North America, breeding almost wholly north 
of the United States. 
a. Penthestes hudsonicus hudsonicus (J. R. Forster). Hudsonian Chick- 
adee. [740.] 
Parus hudsonicus Forster, Philos. Trans., LXII, 1772, 383, 430. (Sev- 
ern River, west coast of Hudson Bay, Canada.) 
Rance.— Northern North America. Breeds in Hudsonian and Canadian 
zones from Kowak Valley, Alaska, and tree limit in central Mackenzie and 
central Keewatin south to southern British Columbia, central Alberta (cas- 
ually Montana), northern Manitoba, central Ontario, and Ungava; south in 
winter casually to northern Illinois. 
b. Penthestes hudsonicus littordlis (H. Bryant). Acadian Chickadee. 
[740a.] 
Parus hudsonicus, var. littoralis BRYANT, Proc. Bost. Soc. N. H., [X, 1865, 
368. (Yarmouth, Nova Scotia.) 
