STRIGID.E — THE OWLS. 61 



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



Labrador ....'. -v&r. pacificus. 



b. No conspicuous patch of white on the jugulum, which, with tlie hning 

 of the wing, is distinctly barred witli blackish. Wing, 12.00 ; tail, 7.50 ; 

 culmen, LOO; tarsus, 2.10; middle toe, L85. 



Colors much as in var. virginianus, but more densely barred beneath, 

 the dark bars narrower and closer together. Hab. South America. 



var. mag ell an ic us} 

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

 transverse bars. Above with longitudinal stripes on the anterior portions. 

 Wing, 11.20-12.00; tail, 6.00-6.50; culmen, .90; tarsus, 2.00; middle toe, 

 1.95. Hab. Middle and South America generally. 



Subgenus N Y C T E A , Stephens. 



Nydea, Stephens, Cont. Shaw's Zobl. XIII, 62, 1826. (Type Strix nyctea, Linn. N. Scan- 

 diaca, Linn.). 



Spepies 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. Doiony youn*/, sooty slate-color. Wing, 16.00-18.00; tail, 9.00- 

 10.00. 



Dusky bars sparse, narrow, umber-brown. Hub. Northern parts of 

 Palfearctic Realm ........ var. scandiaca? 



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

 Northern parts of Nearctic Realm ..... var. arc tic a. 



^ Bubo virginianus, var. magella.nicus^ Strix (8) bubo magellanicus, Gmel. Syst. Nat. 1789, 

 p. 286. — Daud. Tr. Oni. II, 210. —Less. Voy. Coq. I, 617; Isi.s, 1833, 7G. Asio mag. Less 

 Man. Orn. 1. p. 116, 1828. Bubo mag. Gkay, List Birds Brit. Mus. 1844, p. 46. Strix nacu 

 ruto, Vieill. Nouv. Diet. Hist. Nat. VII, 44, 1816 ; Eiic. Meth. Ill, 1281, 1823. Strix eras 

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

 Gray, 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 (under ^. virginianus). Asio crass. 

 Stpjckl. Orn. Syn. I, 208, 1855. Strix macrorhyncha, Temm. PL Col. 62, 1820. Otus? macr 

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

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



^ Bubo viexicanus (Gmel.) Ridgw. Asio mexica,nus, Bkiss. Orn. I, 498, 1760. — Stpjckl. 

 Orn. Syn. I, 208, 1855 (excl. syn.). Strix mexicana, Gmel. S. N. p. 288, 1789. —Lath. Ind. 

 Orn. p. 54 ; Syn. I, 123 ; Gen. Hi.st. I, 314, A. — Daud. Tr. Orn. II, 214. —Shaw, Zool. VII, 

 228. — Otus mexicanus, Stepii. Zool. XIII, pt. ii, p. 57. — BuJw clamator, Vieill. Ois. Am. 

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

 Enc. Meth. Ill, 1279, 1823. Strix longirostris. Spin, Av. Bras. pi. 9 a, 1824. Strix maculata. 

 Max. Beitr. Ill, 281, 1830. Hab. Middle and South America generally. A very distinct 

 species, and a typical Bubo, although usually referred to the genus Otits. 



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

 (1766). Nyctea scandiaca, Yawell, Hist. Brit. B. 1872, 187. Strix nyctea, Linn. S. N. I, 

 1766, 132. Strix nivea, Daud. Tr. Orn. II, 1800. Nyctea nivea. Gray, Gen. fol. sp. 1, pi. xii, 

 f. 2. 



