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



Genus GISELLA Bonaparte. 



Gisella Bonaparte, Ann. Sci. Nat. (Zool.), 4, Ser. I, 1854, P- 112 (nomen nudum); 

 Rev. et Mag. de Zool., VI, 1854, p. 541 (Type Strix lathatni Bonap.). 



*Gisella harrisi (Cassin). Harris' Owl. 



Nyctale harrisi Cassin, Proc. Acad. Nat. Sci. Phila., IV, 1848, p. 157 (South 



America = Colombia). 

 Syrnium harrisi Sharpe, Cat. Bds. Brit. Mus., II, 1875, p. 283. 

 Gisella harrisi Brabourne and Chubb, Bds. S. A., I, 1912, p. 77, No. 710. 



Range: Colombia and Venezuela. 

 i: "Colombia." 



Gisella iheringi^ Sharpe. Ihering's Owl. 



Gisella iheringi Sharpe, Bull. Brit. Om. Club, VIII, 1899, p. XL (S. Lorenzo, 

 Rio Grande do Sul, S. Brazil); Chubb, Ibis, 1910, p. 71; Dabbene, BoI. 

 Soc. Physis I, 19 14, p. 306. 



Range: South Brazil, Paraguay, andN. Argentine. 



Genus SURNIA Dumeril. 



Surnia Dumeril, Zool. Analytique, 1806. p. 34 (Type by designation by Gray, 

 1 841 Strix ulula Linn.). 



Surnia ulula pallasi {Buturlin). Siberian Hawk Owl. 



Surnaiulula pallasi Buturlin, Omith. Monatsb., XV, 1907, p. 100 (Siberia),'' 



Strix ulula Sharpe, Cat. Bds. Brit. Mus., II, 1875, p. 129, part. 



Surnia ulula ulula Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 1914, p. 773, 



key and footnote (part, St. Michael). 

 Range: Siberia; accidental in Alaska (St. Michael).** 



*Sumia ulula caparoch (Muller). American Hawk Owl. 



Strix caparoch MtJLLER, Syst. Nat. Suppl., 1776, p. 69 (Hudson Bay). 



Surnia funerea Audubon, Bds. Am., Oct. ed., 1840, p. 112, pi. 27. 



Syrnia ulula caparoch Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 1914, p. 

 774- 



Range: Northern North America, north to the limit of trees, 

 breeding in Hudsonian and Canadian life zones, south in winter to 

 northern United States and casually farther south. 



fio: Alaska (Kenai Peninsula) 3; Alberta, Canada (Red Deer) 6; 

 and Newfoundland i. 



« Gisella iheringi Sharpe: " Similar to Gisella harrisi (Cass.), but differs in having 

 the upper tail coverts marked with ovate spots and tail with three white bands; ear 

 stripes, lores, and gular stripes, blackish (not chocolate brown); wing, 5.25 in. 



•» Cf. Hartert, Vog. Pal. Fauna, VIII, 1913, pp. 1012-1013. 



" See Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 1916, p. 774, footnote. 



