750 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



BUBO VIRGINIANUS HETEROCNEMIS (Oberholser). 



LABRADOR HORNED OWL. 



Similar to B. v. saturatus but bill larger, posterior under parts 

 lighter, feet paler and less heavily mottled, and upper parts usually 

 with less tawny or ochraceous admixture. 



Adult male.— Wing, 350-365 (357.5) ; tail, 220-230 (225) ; culmen 

 (from cere), 30.* 



Adult female.—W'mg, 370-390 (380); tail, 225-250 (239); culmen 

 (from cere), 28-32 (30.1).^ 



Coast of Labrador (Rigolet; Okkak; Makkokvik; Hopedale;Turn- 

 avik Island; Lance auLoup; Fort Naskopee; Sandwich Bay) and 

 Ungava (Fort Chimo ; near Forks) ; Newfoundland ; Ontario (Muskoka ; 

 Parry Sound; Toronto) in winter. 



Bubo virginianus (not Strix virginiana Gmelin) Coues, Proc. Ac. Nat. Sci. Phila., 

 1861, 217 (Rigolet, Labrador). 



[Bubo] virginianus Gray, Hand-list, i, 1869, 43, no. 442, part. — Coues, Key N. 

 Am. Birds, 1872, 202, part. 



[Bubo virginianus.] Var. pacijicus (not Bubo virginianus pacijicus Cassin) Coues, 

 Key N. Am. Birds, 1872, 202, in text, part. 



Bubo virginianus . . . var. pacijicus Coues, Check List, 1873, no. 3176, part. 



Bubo virginianus, var. pacijicus Ridgway, in Baird, Brewer, and Ridgway, Hist. 

 N. Am. Birds, iii, 1874, 61, 65, part (Fort Nascopee, Labrador). 



Bubo virginianus pacijicus Coues, Check List, 2d ed., 1882, no. 464, part. 



B[ubo] v[irginianus] pacijicus Coues, Key N. Am. Birds, 2d ed., 1884, 504, part. 



[Bubo virginianus] b. pacijicus Coues, Birds Northwest, 1874, 301, part (in syn- 

 onymy). 



B[ubo] virginianus saturatus Ridgway, Orn. Fortieth Parallel, 1877, 572, footnote, 

 part; I.Ian. N. Am. Birds, 1887, 263, part. 



Bubo virginianus saturatus Ridgway, Proc. U. S. Nat. Mus., iii, 1880, 191, part; 

 Nom. N. Am. Birds, 1881, no. 405c, part. — Turner, Proc. U. S. Nat. Mus., 

 viii, 1885, 243 (Fort Chimo, Ungava, resident). — American Ornithologists' 

 Union, Check List, 1886 (and 2d ed., 1895), no. 375c, part. — Raine, Auk, 

 xiii, 1896, 257 (Sandwich Bay, Labrador, breeding; descr. eggs). — Fleming, 

 Auk, xviii, 1901, 38 (Parry Sound and Muskoka, n. w. Ontario, in winter); 

 xxiv, 1907, 75 (Toronto, Ontario, in winter). 



Asia v[irginianus] saturatus Stone, Auk, xx, 1903, 275, part. 



Asio magellanicus heterocnemis Oberholser, Proc. U. S. Nat. Mus., xxvii, Jan. 

 22, 1904, 187 (Lance au Loup, Labrador; coll. E. A. and O. Bangs). — 

 Hantzsch, Journ. fur Orn., 1908, 377 (n. e. Labrador). 



Bubo virginianus heterocnemis American Ornithologists' Union Committee, 

 Auk, XXV, July, 1908, 347; Check List, 3rd ed., 1910, 176.— Fleming, Auk, 

 XXV, 1908, 487, in text (Toronto, Ontario, common in winter of 1907-'08). 



BUBO VIRGINIANUS ALGISTUS (Oberholser). 



SAINT MICHAELS HORNED OWL. 



Similar in size to B. v. lagopTionus but much paler throughout, the 

 under parts less heavily barred, the feet less heavily mottled. 



a Two specimens. f> Seven specimens. 



