STRIGID.K — THE OWLS. fil 



America, from Oregon northward, and around the nortlicnn coast to 

 Labrador .......... var. pac i/icus. 



b. No conspicuous patcli of white on the jugulum, wliich, with tlie lining 

 of the wing, is distinctly barred with Vilackish. Wing, 12.00 ; tail, 7.50 ; 

 culmen, 1.00; tarsus, 2.10; middle toe, 1.85. 



Colors much as m var. virgin ianiis, but more densely barred beneath, 

 the dark bars narrower and closer together. Hab. South Amerii/a. 



var. mag eUa 11 ic us} 

 2. B. mexicanus.° Lower parts longitudinally striped with black, and without 

 transver.-^o Ijars. Above with longitudinal stripes on the anterior portions. 

 Wing, 11.20-12.00; tail, G.OO - G.50 ; culmen, .90; tarsus, 2.00; middle toe, 

 1.95. Hab. Middle and South America generally. 



Subgenus N Y C T E A , Stephens. 



Xyctea, Stephens, Cont. Shaw's Zoul. XllI, ti2, 1S26, (Tyiiu Slrix nyctea, Linn. N. Scan- 

 diaca, Linn.). 



Species and Races. 

 1. N. scandiaca. Adult. Color pure white, more or less barred trans- 

 versely with clear dusky, or brownish-black. Male sometimes almost pure 

 white. Downy )/oun,7, sooty slate-color. Wing, 16.00 -18.00 ; tail, 9.00- 

 10.00. 



Dusky bars sparse, narrow, umbor-lirown. Hub. Northern [)arts of 

 Palsearctic Realm ........ var. scandiaca.^ 



Dusky bars more numerous, broader, and clear brownish-black. Hab. 

 Northern parts of Nearctic Realm var. arc tic a. 



1 Bubo virginianus, var. magdlanicus. Strix (8) bubo magcUanicus, Gmel. Syst. Nut. 1789, 

 p. 2S6. — Dal'D. Tr. Orn. II, 210. —Less. Voy. Coq. I, 617 ; I.sis, 1833, 70. Asia mag. Less 

 Man. Om. I. p. 116, 1828. Bubo mag. Giiay, List Birds Brit. Mus. 1844, p. 46. Siriv nacii 

 ■nUa, ViEiLL. Nouv. Diet. Hist. Nat. VII, 44, 1816 ; Enc. Meth. Ill, 1281, 1823. Strix eras 

 siroslris, Vieill. Nouv. Diet. Hist. Nat. VII, 44 (1817); Enc. Meth. Ill, 1280. Otus crass 

 Gr.w, Gen. B. fol. .sp. 6 (1844) ; List Birds Brit. Mus. p. 106. Bubo crass. Bonap. Consp. Av, 

 p. 48 (1850). — Kaup, Monog. Strig. Cont. Orn. 1852, 116 (mider i?. virginianus). Asia crass. 

 Stuickl. Orn. Syn. I, 208, 1855. Strix macrorhyncha, Temm. PI. Col. 62, 1820. Otus! macr 

 Stepii. Zobl. XIII, pt. ii, p. 59. Otus macr. Ctiv. Reg. An. (ed. 2), I, 341. —Less. Tr. Orn. 

 p. 109. Asia macr. Less. Man. Orn. I, 117. 



'■^ Bubo mcxicanus (Gmel.) Ridgw. Asio mcricanvs, Bp.iss. Orn. I, 498, 1760. — Stp.ickl. 

 Orn. Syn. I, 208, 1855 (excl. syn.). Strix mexicana, G.MEL. S. N. p. 288, 1789. — L.vril. Iiid. 

 Orn. p. 54 ; Syn. I, 123 ; Gen. Hist. I, 314, A. — Dai^d. Tr. Orn. II, 214. — Suaw, Zool. VII, 

 228.— Otes mcxicanus, Stepii. Zoiil. XIII, pt. ii, p. 57. — Bubo clamator, Vieill. Ois. Am. 

 Sept. pi. XX, 1807. Scops cl. Gray, List Birds Brit. Mus. 1844, p. 45. Strix clamala, Vieill. 

 Enc. Meth. Ill, 1279, 1823. Strix loiujirostris, Spix, Av. Bras. pi. 9 a, 1824. Strix maculala, 

 Max. Beitr. Ill, 281, 1830. Hah. Middle and South Anierica generally. A very distinct 

 species, and a typical Btibo, although usually referred to the genus Otus. 



^ Nyctea scandiaca, var. nivca (see p. 000). Strix scandiaca, Linn. S. N. (12th ed.) I, 132 

 (1766). A^yctca scandiaca, Y.A.WELL, Hist. Brit. B. 1872, 187. Strix nyctea, Linn. S. N. I, 

 1706, 132. Strix nivca, Daud. Tr. Orn. II, 1800. Nyctea nivea, Gray, Gen. fol. sp. 1, pi. xii, 

 f. 2. 



