162 CHECK-LIST OF NORTH AMERICAN BIRDS. 
400. Picoides arcticus (SwaIns.). 
Arctic Three-toed Woodpecker. 
Picus (Apternus) arcticus Swans. in Sw. & Ricu. Fauna Bor. 
Am). a83t, (213+ 
Picoides arcticus Gray, Gen. B. I. 1845, 434. 
[B 82, C 300, R 367, C 443.] 
Groc. Dist.— Northern North America, from the arctic regions 
south to the northern United States (New England, New York, 
Michigan, Minnesota, and Idaho), and in the Sierra Nevada to 
Lake Tahoe. 
401. Picoides americanus BRrEHM. 
American Three-toed Woodpecker. 
Picoides americanus BreuM, Handb. Vog. Deutschl. 1831, 195. 
[B's3, C301, R368, C 44a] 
Groc. Dist.— Northern North America, east of the Rocky Moun- 
tains, from the arctic regions southward to the northern United 
States (Maine, Mass., New York). 
401 a. Picoides americanus alascensis (NELs.). 
Alaskan Three-toed Woodpecker. 
Picoides tridactylus alascensis Newson, Auk, I. April, 1884, 165. 
Picoides americanus alascensis Ripcw. Pr. U.S. Nat. Mus. VIII. 
1885, 355: 
(BCS Rees 
Geroc. Dist.— Alaska, south to northern Washington. 
401 4. Picoides americanus dorsalis Barrp. 
Alpine Three-toed Woodpecker. 
Picoides dorsalis Batrv, B. N. Am. 1858, roo. 
Picoides americanus dorsalis BarrD, Orn. Calif. I. 1870, 386. 
[B 84, C 3014, R 368a, C 445. | 
Groc. Dist— Rocky Mountain region, from British Columbia 
and Idaho south into New Mexico. 
