BIBDS OP NORTH AND MIDDLE AMERICA. 751 



Adult male.— Wmg, 355-3&0 (357.5); tail, 225-245 (235); culmen 

 ^from cere), 29." 



Adult female.— W'mg, 355-390 (371.5); tail, 225-240 (232); cul- 

 nen (from cere), 28-31 (29.3).* 



Coast district of northwestern Alaska, from Bristol Bay to (or 

 jeyond) Kotzebue Sound (Alognagik River; Port Hxiron; St. 

 Sfichaels; Lower Yukon; Kowak River). 



Bubo mrginianus subarcticus (not Bubo subarctieus Hoy) Nelson, Cruise "Cor- 



■win" in 1881 (1883), 76 (coast of Bering Sea, Alaska); Rep. Nat. Hist. Coll. 



Akska, 1887, 152, part (St. Michaels, etc.). — ^Ttjener, Contr. Nat. Hist. 



Alaska, 1886, 162, part (St. Michaels, etc.). 

 Asia magellanicus algistus Obbbholsbr, Proc. U. S. Nat. Mus., xxvii, Jan. 22, 



1904, 190 (St. Michaels, Alaska; coll. U. S. Nat. Mus.). 

 Bubo virginianus algistus American Ornithologists' Union Committee, Auk, 



XXV, 1908, 347; Check List, 3rd ed., 1910, 176.— Grinnell (J.), Condor, xii, 



1910, 42 (St. Michaels). 



BUBO VIRGINIANUS WAPACUTHU (Gmelin). 



AB.CTIC HORNED OWX. 



Similar to B. v. occidentalis but paler, the upper parts with much 

 more of white and less of blackish, with the ochraceous admixture 

 paler (light buffy) ; imder parts less heavily barred, the feet paler, 

 usually immaculate buflf or buffy white. 



.A(^uZ«maZe.— Wing, 337-368 (352); tail, 215-230 (221.6); cubnen 

 (from cere), 27-30 (28.5)."= 



Adult female.— Wing, 385-390 (387.5); tail, 235-237 (236); cul- 

 men (from cere), 31-31.5 (31.3).'' 



North-central Canada, from Hudson Bay to valley of the Mac- 

 kenzie River (Fort Resolution; Slave River, 75 miles below Fort 

 Smith) ; breeding southward to northern Manitoba and southwestern 

 Saskatchewan (Prince Albert; Moose Lake; Pas); south in winter to 

 Ontario (Toronto), WisconsLa (Racine), northeastern lUtnois (Kane 

 County; Cook County), Minnesota (Aitken), North Dakota, (Devils 

 Lake), Montana, Idaho (Fort Sherman), and Colorado. 



[Sirix] wapacuthu Gmelin, « Syst. Nat., i, pt. 1, 1788, 290 (woods about Hudson 

 Bay; based on Wapacuthu Owl Pennant, Arctic Zool., i, 231). — Latham, Index 

 Orn., i, 1790, 58. 



" Two specimens. 



6 Four specimens. 



c Five specimens. 



^ Two specimens. « \ 



« Notwithstanding the circumstance that the original describer placed this bird in 

 he section ' ' without ears, " it is practically certain that the Wapacuthu Owl of Pennant 

 B not Nyctea nyctea, as commonly supposed, but is the Arctic Great Horned Owl. 

 Except in the one particular mentioned the description answers perfectly to the 

 atter. Molting specimens of Bubo are often destitute of obvious ear-tufts, and this 

 nay have been the condition of Pennant's bird; or the ear-tufta may have been 

 plucked before the specimen came into his possession. 



