AVES — STRIGID^. 685 



Nacurutu, Azara, Apunt. I. p. 192 (1802). 



Strix iiaairutu, Vieill. N. Diet. d'Hist. VII. p. 44 (1817: ex Azara). 



Asio mogellanictts, Less. Man. d'Orn. I. p. 116 (1828); Oberholzer, Proc. 



U. S. Nat. Mus., xxvii, pp. 179, 188 (1904). 

 Bubo virginianiis, Fraser (nee Gm.), P. Z. S. 1843, P- "o (Chili); Hartl. 

 Ind. Azara, p. 3 (1847); Cunningh., Nat. Hist. Str. Magell. pp. 91, 

 277 ( 1 871); Huds. P. Z. S. 1872, p. 549 (Rio Negro); Scl. & Salv., 

 Nomencl. Av. Neotr. p. 116 (1873); Doering Expl. al Rio Negro, 

 Zool. p. 49 (1882 : Choelechoel, abundant); White, P. Z. S. 1883, p. 

 433 (Cosquin, Cordoba, Sept.); Barrows, Auk. I. p. 29 (1884: Arroyo 

 de Gualeguaychu); Scl. & Huds. Argent. Orn. II. p. 50 (1889); 

 Frenzel, J. f. O. 1891, p. 115 (C6rdoba); Graham Kerr, Ibis, 1892. 

 p. 141 (Fortin Nueve); James, New List Chil. B. p. 6 (1892). 

 Uliila crasstrostris, Des Murs in Gay's Hist. Chil. Zool. I. p. 254 (1847), 

 Bubo crassirostris, Burm. Reis. La Plata, II. p. 439 (1861 : Mendoza); 

 Vincig. Boll. Soc. Geogr. Ital. (2) IX. p. 797 (1884); Carbajal, La 

 Patagonia part II. p. 260 (1900). 

 Btibo virginiauus var. inagellaiiicus, Baird, Brewer and Ridgw. B. N. Amer. 

 III. p. 61 (1874). 

 General description. 



Size. — Adult male, 7949, P. U. O. C. Arroyo Eke, Patagonia, 14 May, 

 1898. A. E. Colburn, collector. 

 Total leno^th, about 18.00 inches. 

 Wing, 12.00 inches. 

 Tail, 8.00 inches. 



The adult female is larger than the male, but similar in color; length 

 about 20.00; wing 13.50; tail 8.50 inches. 

 Color. — Adult male cited above. 



General color: Black, white and buff, as well as brown in varied and 

 modified pattern and shade ; vermiculated and indistinctly barred above ; 

 narrowly and regularly barred below. 



Head : With distinct and prominent ear-tufts about an inch and three- 

 quarters long; facial disk white, varied with dull buff and dusky, the 

 feathers with hair-like black shafts ; about the bill and lower part of facial 

 disk many stiff black hairs ; eyelid black ; facial disk defined by a clear 

 black band, starting in front of the eye and passing above ; it becomes 

 broader on the posterior margin of the disk and again narrows at the 



