656 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult Tnale.— Length (skins), 325-373 (345) ; wing, 284-302 (292) ; 

 tail, 121.5-157.5 (147.6); culmen, from cere, 15-18 (16.6)." 



Admit, female.— Length, (skins), 320-382 (345); wing, 288-303 

 (293.9); tail, 143.5-160 (151); culmen, from cere, 16.5-18.5 (17.3).» 



Temperate North America; north to Newfomidland, southern 

 Quebec (Point de Monts), northwestern Ontario (Elmsdale; Port 

 Sydney), southern Keewatin, southern Mackenzie, British Coliunbia, 

 and coast of southern Alaska (Taku Kiver) ; breeding southward to 

 Virginia, Arkansas, northern Texas, southern California, etc. ; winters 

 over greater part of its range and southward to central Mexico 

 (Guanajuato; VaUey of Mexico and Mexicalcingo, Mexico; Orizaba, 

 Puebla; Las Bocas, Durango). 



(?) [Strix] americana Gmeun, Syst. Nat., i, pt. 1, 1788, 288 (South America; 

 based on Asia americanus Brieson, Om. p. 145, no. 7, and Bubo ochro-dnereus 

 pectme maculosa Peuillee, Joum. des obs., ed. 1725, p. 59. — Latecam, Index 

 Om., i, 1790, 54. 



Otus americanus Stephens, Shaw's Gen. Zool., xiii, pt. ii, 1825, 57. — Bonaparte, 

 Geog. and Comp. List, 1838, 7. — Jardine, Contr. Om., 1848, 81 (Bermudas). — 

 KaTjp, Jardine's Contr. Om., 1852, 113 (monogr.); Trans. Zool. Soc. Lond., 

 iv, 1859, 232 (monogr.).— Allen, Proe. Essex Inst., iv, 1864, 51. 



[Otus] americana Bonaparte, Consp. Av., i, 1850, 50. 



[Otus] americanus Geat, Hand-list, 1, 1869, 50, no. 540. — Sclatbr and Saxvin, 

 Norn. Av. Neotr., 1873, 116. 



0[tus] americanus Maximilian, Joum. fiir Om., 1858, 25 (Missouri River). 



Otus vulgaris americanus Schlbgel, Mus. Pays-Bas, ii, no. 11 (Oti), 1863, 2; no. 

 36 (Revue), 1873, 2. 



[Asia otus.] Subsp. a. Asio americanus Sharps, Cat. Birds Brit. Mus., ii, 1875, 

 229 (Pt. Simpson, and Sumas, Brit. Columbia; w. Mexico ; Valley of Mexico). 



Asm americanus Meaens, Bull. Essex Inst., xii, 1879, 121 (Hudson Highlands, 

 New York).— RiDG WAT, Proc. U. S. Nat. Mus., iii, 1880, 191; Norn. N. Am. 

 Birds, 1881, no. 395. 



A[sio] americanus Ridgway, Bull. Ills. State Labr. N. H., no. 4, 1881, 187 (Illi- 

 nois). 



" Fourteen specimens. 



6 Eleven specimens. 



Locality. 



MALES, 



Five adult males from eastern United States 292.6 160.9 16.1 



Eight adult males from western United States 292.2 144.4 16.9 



One adult male from Guanajuato, Mexico 287 156 17 



FEMALES. 



Six adult females from eastern United States 293.8 160.5 17.2 



Five adult females from western United States 294.2 151 17.3 



Culmen, 

 from 

 cere. 



