BIRDS OF NORTH AND MIDDLE AMERICA. 703 



Scops asio, var. maccalli Ridgway, in Baird, Brewer, and Ridgway, ilist. N. 

 Am. Birds, iii, 1874, 49, 52 ("Camp 118, New Mexico "=Bill Wiliiams Fork, 

 Arizona). 



Scops trichopsis? {notS. trkhopsis^^agler) Ridgway, Proc. U. S. Nat. Mus., i, 1878, 

 114, part (descr. of adult male from "New Mexico," i. e. Arizona; monogr.). 



Scops trichopsis Ridgway, Proc. U. S. Nat. Mus., iii, 1880, 191, part; Nom. N. Am. 

 Birds, 1881, no. 403, part.— Coues, Check List, 2d ed., 1882, no. 470, part. 



S[cops] trichopsis ? Coues, Key N. Am. Birds, 2d ed., 1884, 506, part. 



(?) [Scops asio.] Subsp. d. Scops trichopsis Sharpe, Cat. Birds Brit. Mus., ii, 

 1875, 119, part (w. Mexico). 



Scops asio trichopsis ? Brewster, Bull. Nutt. Orn. Club, vii, 1882, 33, part. 



Scops asio trichopsis Brewster, Bull. Nutt. Orn. Club, viii, 1883, 36 (Camp Lowell, 

 Arizona). 



Megascops asio trichopsis Ridgway, Proc. U. S. Nat. Mus., viii, Sept. 2, 1885, 355, 

 part. — American Ornithologists' Union, Check List, 1886, no. 373/, part. — 

 Scott, Auk, iii, 1886, 423 (San Pedro slope of Santa Catalina Mts., Arizona). — 

 Bendire, Life Hist. N. Am. Birds, (i), 1892, 368, part, pi. 12, fig. 11 (egg).— 

 Rhoads, Proc. Ac. Nat. Sci. Phila., 1892, 116 (near Tucson, Arizona). — Has- 

 BRoucK, Auk, X, 1893. 251, 257, part (geog. range). 



M[egascops] asio trichopsis Ridgway, Man. N. Am. Birds, 1887, 261, part. 



Megascops asio dneraceus Ridgway, Auk, xii, no. 4, Oct., 1895, 390, in text (based 

 on M. a. trichopsis Ridgway, Man. N. Am. Birds, and therefore including 

 also 0. a. aiJceni; but type fi-om Fort Huachuca, Arizona; coll. U. S. Nat. 

 Mus.). — American Ornithologists' Union, Check List, 2d ed., 1895, no. 

 373, part.-— SwARTH, Pacific Coast Avifauna, no. 4, 1904, 8 (Huachuca Mts., 

 Arizona, below 6,500 feet.). — Hunn, Auk, xxiii, 1900, 421 (Silver City, b. w. 

 New Mexico). 



Mlegascops] asio cineraceus Ridgway, Man. N. Am. Birds, 2d ed., 1896, 261, 592, 

 part. 



Otus a[sio] cineraceus Stone, Auk, xx, July, 1903, 275. 



Otus asio cineraceus American Ornithologists' Union Committee, Auk, xxv, 

 July, 1908, 372; Check List, 3d ed., 1910, 173.— Swarth, Univ. Calif. Pub. 

 Zoology, vii, no. 1, 1910, 2, in text (crit.). 



Scops cineracea Salvin and Godman, Biol. Centr.-Am., Aves, iii, 1897, 19. 



[Scojos] cineracea Sharpe, Hand-list, i, 1899, 289. 



Otus asio gilmani Swarth, Univ. Calif. Pub. Zool., vii, no. 1, May 2C>, 1910. 1 

 (Blackwater, Pinal Co., Arizona; coll. Mus. Univ. Calif.).— American Or- 

 nithologists' Union Committee, Auk, xxix, 1912, 382. 



OTUS ASIO XANTUSI (Brewster). 



XANTUS'S SCREECH OWL. 



Similar to 0. a. cineraceus but A^eriniculations of upper parts finer 

 and blackish streaks narrower, size smaller, and toes more scantily 

 feathered. 



Adult maZe.— Length (skins), 168-191 (177); wdng, 140.5-150.5 

 (144.9); tail, 68.5-75 (71.4); cuhnen, from cere, 12.5-13.5 (12.8).« 



Adult female.— LerxgXh (slcins), 176-186.5 (181.2); wing, 147-152.5 

 (149.7); tail, 76-77.5 (76.7); culmen, from cere, 13.5-14 (13.7).^ 



a Five specimens. * Two specimens. 



