164 CHECK-LIST OF NORTH AMERICAN BIRDS. 



Otus asio gilmani Swarth. Sahuaro Screech Owl. [373Z.] 



Otus asio gilmani Swarth, Univ. Calif. Publ. Zool., VII, No. 1, May 26, 

 1910, 1. (Blackwater, Pinal Co., Arizona.) 



Range. — Lower Austral Zone of southern Arizona, and the Colorado River 

 Valley of southeastern California and northeastern Lower California. 



Otus asio xantusi (Brewster). Xantus's Screech Owl. [373.2.] 



Megascops xantusi Brewster, Bull. Mus. Comp. Zool., XLI, No. 1, Sept., 

 1902, 93. (Santa Anita, Lower California.) 



Range. — Cape district of Lower California. 



Otusflammeolus (Kaup). Flanunulated Screech Owl. [374.] 



Str[ix] flammeola "Light.," Kaup, in Jardine, Contrib. Orn., 1852 [1853], 

 111. (Vera Cruz, Mexico.) 



Range. — -Southern British Columbia, eastern Washington, and Idaho to 

 western Texas, New Mexico, Arizona, and the higher mountains of California 

 south through Mexico to the highlands of Guatemala. 



Otus trichopsis (Wagler). Spotted Screech Owl. [373.1.] 



Scops trichopsis Wagler, Isis von Oken, [XXV] 1832, Heft iii (March), 

 col. 276. (Mexico.) 



Range.— Southern Arizona (Huachuca and Catalina mountains) to 

 Guatemala. 



Genus BUBO Dumeril. 



Bubo Dumeril, Zool. Analytique, 1806, 34. Type, by tautonymy, Strix 

 bubo Linnaeus. 



Bubo virginianus subarcticus Hoy. Arctic Horned Owl. [3756.] 



Bubo subarcticus Hoy, Proc. Acad. Nat. Sci. Phila., VI, No. 6, Nov.-Dec, 

 1852 [Feb. 7, 1853], 211. (Racine, Wisconsin.) 



Range. — Breeds from Hudson Bay and the tree limit in the valley of the 

 Mackenzie south to northern Alberta, central Manitoba, southwestern Sas- 

 katchewan, and northern Ontario. In winter to southern British Columbia, 

 and the northern United States from Idaho to Nebraska and Wisconsin, casu- 

 ally to New York and Massachusetts. 



Bubo virginianus heterocnemis (Oberholser). Labrador Horned Owl. 



[375/.] 



Asio magellanicus heterocnemis Oberholser, Proc. U. S. Nat. Mus., 

 XXVII, No. 1352, [Jan. 22] 1904, 187. (Lance au Loup [ =Wolf Bay], 

 Labrador.) 



