500 Field Museum of Natural History — Zoology, Vol. XIII. 



Picoides tridactylus var. americanus Baird, Brewer and Ridgway, Hist. N. 



Am. Bds., II, 1874, p. 532, part. 

 Picus tridactylus AUDUBON, Orn. Biog., 1834, p. 197, pi. 132. 

 Picus hirsutus Vieillot, Nouv. Diet. d'Hist. Nat., XXVI, 1818, p. 103, part. 

 Picoides americanus americanus Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 



1914. P-29I- 



Range: Boreal forested regions of North America, chiefly east of 

 the Rocky Mountains, from Labrador and northern Ungava, west to 

 Alberta, British Columbia and eastern Idaho; breeds from Anticoste I., 

 northern New York and northern Ontario, northward. Winter range 

 extends to northern portions of Minnesota, Wisconsin, Michigan, south- 

 em Ontario and irregularly to Massachusetts. 



fis: Maine (Bangor 9; Megallaway River 2, "Maine" 4). 



*Picoides americanus fasciatus Baird. Alaskan Three-toed Wood- 

 pecker. 



[Picoides americanus] var. fasciatus Baird, in Cooper's Orn. Calif., 1870, p. 385, 



part (Type from Fort Simpson, Mackenzie). 

 Picoides tridactylus alascensis Nelson, Auk, 1884, p. 165 (Nulato, Alaska). 

 (?) Picoides americanus fumipectus Grinnell, Univ. Calif. Pub., Zool., V, 1909, 



p. 217 (Hoonah, Chichagoff I., Alaska). 

 Picoides americanus fasciatus Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 



1914, p. 295. 



Range: Hudsonian and Canadian zones in Alaska; Mackenzie and 

 Keewatin south to southern British Columbia (Vancouver I., etc.), 

 southern Alberta, southern Keewatin and northern Montana (Colum- 

 bia Falls, etc.); casual in Washington (Chilowyuck Lake). 



4: Montana (Coltmibia Falls 3); Alberta (Banff i). 



*Picoides americanus dorsalis (Baird). Alpine Three-Toed Wood- 

 pecker. 



Picoides dorsalis Baird, Rep. Pacific R. R. Surv., IX, 1858, p. 100 (Laramie 

 Peak, Wyoming); Malherbe, Mon. Picids, I, 1861, p. 179. 



Picoides americanus dorsalis Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 

 1914, p. 297. 



Range : Forested regions in motmtains from northern Montana and 

 Wyoming, southward through motmtains from Colorado to New Mexico 

 and Arizona. 



2 : Wyoming (Laramie Peak I) ; locality ? i . 



*Picoides arcticus (Swainson) . Black-Backed Three-Toed Wood- 

 pecker. 



Picus (Apternus) articus Swainson, Fauna Bor.-Am., II, 1831, pp. xxvi, 

 313 (eastern slope of Rocky Mts. near sources of Athabasca River). 



