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



Bubo virginianus heterocnemus Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 1914, 



P- 750. 

 Range: Coast region of Labrador and Ungava, south in winter to 

 southern Ontario and Newfoundland. 

 I : Labrador. 



Bubo virginianus neochonis Oherholser ^ Newfoundland Great 

 Horned Owl, 

 Bubo virginianus neochorus Oberholser, Proc. Biol. Soc, Wash., XXVII, 1914, 

 p. 46 (Fox Island River, Newfoundland). 



Range: Newfoundland and Nova Scotia. 



Bubo virginianus mesembrinus (Oberholser) . Costa Rican Great 



Horned Owl. 



Asio megellanicus mesembrinus Oberholser, Proc. U. S. Nat. Mus., XXVII, 



1904, p. 179 (San Jose, Costa Rica). 

 Bubo virginianus mesembrinus Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 



1914. P- 754. 

 Range: Costa Rica and Western Panama. 



Bubo virginianus melancerus {Oberholser). Oaxaca Great Horned 

 Owl. 



Asio megellanicus melancerus Oberholser, Proc. U. S. Nat. Mus., XXVII, 1904, 



p. 180 (Tehuantepec City, Oaxaca, Guatemala). 

 Bubo virginianus melancerus Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 1914, 



P- 753- 

 Range: Central Mexico to Guatemala. 



Bubo virginianus mayensis Nelson. Yucatan Great Horned Owl. 



Bubo virginianus mayensis Nelson, Proc. Biol. Soc. Wash., XIV, 1901, p. ly 

 (Chicken-Itza, Yucatan); Ridgway, Bull. U. S. Nat. Mus., No. 50, VI, 1914, 

 P- 753- 



Range: Yucatan and British Honduras. 



Bubo virginianus elachistus Brewster. Dwarf Great Horned Owl. 



Bubo virginianus elachistus Brewster, Btill. Mus. Comp. Zool., XLI, 1902, p. 96 

 (Serra de la Lagima, Lower California); Ridgway, Bull. U. S. Nat. Mus., 

 No. 50, VI, 1914, p. 746. 



Range: Southern Lower California (Victoria Mts., etc.) 



* Bubo V. neochorus Oberholser: "Similar to Bubo v. heterocnemis (Ober- 

 holser), but smaller, excepting the bill; upper parts lighter, the dark ground color 

 less deep and more broken; the light markings more numerous; under parts rather 

 less of dark color; feet and legs heavily mottled with dark brown. Male, wing, 

 345 mm.; female, about 3.70 mm. 



