Head, large; facial disc, perfect; bill, rather long; eyes, of moderate size; wings, long; tail, moderate; legs, rather long, clothed with short feathers; toes, long—size, medium, never very large; colors of plumage in the greater number of species, yellowish-fawn color and white. I. GENUS STRIX. Linnæus Syst. Nat., I. p. 131. (1766.) Head, large, without ear-tufts; cavity of the ear, large; bill, rather long, covered at the base by projecting, bristle-like feathers; eyes, rather small, and surrounded by radiated feathers; facial disc, perfect; wings, very long, pointed, and with the outer edges distinctly fringed; tarsi, long, thinly covered with feathers; toes, long, more or less covered with bristles; claws, long, moderately strong, curved, very sharp; tail, moderate, or rather long. Contains about twelve species of all parts of the world, nearly all of which resemble in a greater or less measure _Strix flammea_, of Europe, and _Strix pratincola_, of North America. 1. Strix pratincola. Bonap. Comp. List., p. 7. (1838.) The Barn Owl. Strix americana. Aud. Orn. Biog. II. p. 421 (1834, but not of Gmelin, 1788). Wilson Am. Orn., VI. pl. 50., fig. 2. Aud. B. of Am. pl. 171, octavo edition, I. pl. 34. Nat. Hist. State of New York Birds, pl. 13, fig. 28. Typical, and strictly exhibiting the generic characters. Adult. Entire plumage above, pale fawn color, or tawny brownish-yellow, in some specimens nearly white, mottled with dark-gray and white, especially on the back and wing coverts and outer webs of the quills, which mottling gives the predominating color of those parts to many specimens; nearly every feather with a small subterminal black spot succeeded by another of white. Quills, fawn-colored, or pale reddish-yellow, varying much in shade in different specimens, and fading into nearly white on the inner webs; primaries with about five irregular transverse bars of brownish-black. Under parts, generally pale fawn color, but in some specimens, pure white, with small sagittate, lanceolate or circular spots of brownish-black; tibiæ and tarsi similar in color to the other under parts, but frequently unspotted and pure white; inferior coverts of the wing and tail, white; tail, same color as quills and crossed by four or five bars of dark-brown; face, white, with central spots of dark-chestnut nearly encircling the eyes, disc feathers tipped with dark fawn-color and brownish-black, forming a very conspicuous margin, especially on the lower part of the face; bill, toes and claws, light-yellowish; irides, brown. Distinctive colors of sexes not well understood, but they are, probably, nearly alike. Dimensions. _Female_, total length, about 16 inches; wing, 13; tail, 5½ inches. _Male_, smaller.