"Female.--Upper parts brown, each feather with a broad reddish margin; throat reddish immaculate; feathers of back and scapulars with reddish bars, more or less crescentic; under parts reddish buff, each feather brown in the central part, especially those of breast and flanks; under tail-coverts lighter; wings resemble those of the male, except that the blue on the wing-coverts is very dull and the speculum not so glossy; tail-feathers whitish, with brown marks. Beak olive-brown, base of the maxilla and the entire mandible orange; iris hazel-brown; feet dull orange. "Male in first plumage resembles the female, but the wings are brighter colored. Bill pale reddish brown; legs and feet flesh-color. "Males in their first nuptial plumage have the white of the breast with a few dark crescentic bands, the lower belly with dark bars, and the rich black of the under tail-coverts mottled with chestnut and white. "Adult male in molting plumage may be distinguished from the adult female by the greater brilliancy of the blue and metallic green on the wing, the plain dark upper tail-coverts, and the general darker color of the entire plumage; the crown is dark brown. "Young in down resemble those of the wigeon in having the upper parts almost uniform, with indistinct pale spots, but they possess the dark brown stripe through the eye as in the young mallard. The bill is not widened at the tip, but it grows very rapidly." (Salvadori.) This duck may be recognized in any plumage by the shape of its bill. Subfamily MARILINÆ. Genus MARILA Oken, 1817. The members of this subfamily and genus differ from all other Philippine ducks in having a tuft of long feathers springing from the crown; the bill also is characteristic being short and wide and slightly wider at tip than at base. Species. a1. Back finely vermiculated with white. ... marila (p. 198) a2. Back uniform black or blackish brown. ... fuligula (p. 199) 164. MARILA MARILA (Linnæus). SCAUP DUCK. Anas marila Linnæus, Fauna Suecica, ed. 2, (1761), 39. Fuligula marila Salvadori, Cat. Birds Brit. Mus. (1895), 27, 355; Sharpe, Hand-List (1899), 1, 223; Oates, Cat. Birds' Eggs (1902), 2, 182; McGregor, Phil. Jour. Sci. (1907), 2, sec. A, 295. Luzon (Parsons). Northern parts of Europe, Asia, and North America; wintering on the Mediterranean, Black, and Caspian Seas and in India, China, Japan, and Central America.