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



Otus asio brewsteri Ridgway. Brewster's Screech Owl. 



Otus asio brewsteri Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 1914, p. 700 

 (Salem, Oregon). 



Range: Western Oregon, U. S. A. 

 *Otus asio maxwelliae (Ridgway). Rocky Mountain Screech Owl. 



Scops asio maxwelliae Ridgway, Field and Forest, II, No. 11, 1877, p. 210 



(Boulder, Colorado). 

 Otus asio maxwelliae Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 1914, p. 696. 



Range: Eastern Montana and Wyoming to central Colorado. 

 4: Colorado (Lorimer County) 2; "Colorado" 2. 



*Otus asio macfarlanei (Brewster). MacFarlane's Screech Owl. 



Megascops asio macfarlanei Brewster, Auk, 1891, p. 144 (Walla Walla, State of 



Washington, U. S. A.). 

 Otus asio macfarlanei Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 1914, p. 



677. 



Range: Western Montana to northeastern California, eastern Ore- 

 gon, eastern Washington, and southeastern British Columbia. 

 5: Montana 3; and Washington 2. 



*Otus asio kennicottii {Elliot). Kennicott's Screech Owl. 



Scops kennicottii Elliot, Proc. Ac. Nat. Sci., Phila., 1867, p. 69 (Sitka, Alaska); 



Id., lUust. New and Unfig. Bds. N. Am., 1869; p. XXVII, pi. 11. 

 Otus asio kennicottii Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 19 14, p. 698, 



Range: Coast region of southern Alaska to northwestern Wash- 

 ington. 



3: British Colombia (Victoria). 



Otus asio cineraceus (Ridgway). Arizona Screech Owl. 



Megascops asio cineraceus Ridgway, Auk, 1895, p. 390, in text (Ft. Huachuca, 



Arizona). 

 Otus asio cineraceus Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 1914, p. 702. 



Range: Southwestern New Mexico and southern Arizona to south- 

 eastern California and northern Sonora, Mexico. 



Otus asio gilmani* Swarth. Oilman's Screech Owl. 



Otus asio gilmani Swarth, Univ. Calif. Pub., Zool., VII, 1910, p. i (Blackwater, 

 Pinal County, Arizona); Id., The Condor, XVIII, 1916, p. 163. 



Range: Valleys of southwestern Arizona. 



■ Otus asio gilmani Swarth : Close to O. a. cineraceus Ridgway, but claimed to 

 differ in being paler and the pencillings much finer; not recognized by Ridgway 

 (See Bull. U. S. Nat. Mus., No. 50, VI, 19 14, p. 702, foot note), but later upheld by 

 Swarth (The Condor, 1. c). 



