702 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



OTUS ASIO CmERACEUS (Ridgway). 



ASIZOITA SCKEECH OWL. 



Similar to 0. a. aiJceni, but more delicately penciled, both above 

 and below, the pencilings on under parts averaging denser or more 

 numerous. 



Adult male. — Length (skins), 175-200 (190); wing, 145.5-159.5 

 (152.6); tail, 72-83 (76.5); culmen, from cere, 12-14 (12.9).» 



Adult female.— Length (skins), 180-220 (202); wing, 149.5-161 

 (156.5); tan, 72-80.5 (75.1); cuhnen, from cere, 12-14.5 (13.5).» 



Southern Arizona (Fort Huachuca; Huachuca Mountains; San 

 Pedro slope of Santa Catalina Mountains; Riverside and Blackwater, 

 Pinal County; Fort Grant, Graham County; Tucson; Camp LoweU; 

 Gila River; Colorado River; Little Colorado River; BiU Williams 

 Fork; Fort Mojave), southeastern California (Colorado River), and 

 southwestern New Mexico (Silver City and Red Rock, Grant County) ; 

 probably also northern Sonora. 



Scops m'calli (not S. mccallii Cassin) Kennelt, Rep. Pacific R. R. Surv., x, pt. 



iv, 1859, 20 (Bill Williams Fork, Arizona). 

 ScopsmocalliCovEa, Proc. Ac. Nat. Sci. Phila., 1866,49 (Fort Mojave and Colorado 



Chiquito R., Arizona). 

 [Scops asio.] Var. maccallii Coues, Key N. Am. Birds, 1872, 203, part. 

 Scops asio . . . var. maccallii Coues, Check List, 1873, no. 3186, part. 

 Scops asio . . . var. maccalli Hbnshaw, Zool. Expl. W. of lOOth Merid., 1875, 



405, part (Gila R. and Fort Grant, Arizona). 

 [Scops asio] c. maccallii Coues, Birds Northwest, 1874, 303, part. 



With, a considerable series of specimens before me, including those upon which 

 0. a. gilmani Swarth was based, I am quite unable to appreciate reasons for the recog- 

 nition of that supposed subspecies; indeed, few of the recognized subspecies of the 

 group present as great uniformity of coloration as does this series as a whole. As to 

 measurements, there is reason for believing that some specimens are wrongly sexed. 

 The two males from the Colorado River, California, have the wing (which is the same 

 length in both) only 2.5 mm. shorter than in one of the males from Camp Lowell. 



