311. Dafila acuta.
THE PINTAILED DUCK.
Acuta=sharp, pointed; from acuo = I sharpen.
Sinkpar, N. W. P.; Dighons, Bengal; Laitunga, Manipur ; Taw-boy, Burma; Digoonch, Nepal; Kokarali, Drighush, Sind; Sinkdum, Cabul; Chasugshu-aurdah, Yarkand.
Male 22" to 29"; 1 3/4 to 2 3/4 lbs. Female 20" to 22"; 1 to 2 lbs. Legs grey-black. Bill black, sides blue. Head umber. White neck-streaks. Back and sides finely vermiculated black and white. Speculum green, glossed purple, bordered above by a pale bar and below by a white one. Long central tail black.— Female largely marked dark brown, edged white. Speculum dull, unglossed. Northern Hemisphere, and wintering in N. Africa, India, Ceylon, Burma, China, Japan, and N. and C. America. Five to nine eggs (2.1 x 1.5), greenish buff. (J. 962. B. 1600.) See illustration, p. 275.
Also D. modesta. Probably to be identified with D. acuta. C. Pacific D. eatoni. 17". Legs dark slate. Bill plumbeous. Head and upper neck dark brown, with darker shaft stripes. Back brown, with narrow white wave lines. Throat divided from neck by a white band. Below dully grey, thickly dotted on breast with small black spots. Speculum hazel, black, bronze-green, black and white. Kerguelen Island.
D. spinicauda. 20". Legs plumbeous. Bill yellow, culmen black. Crown rufous. Upper neck with black shaft streaks. Throat whitish. Below dark brown, edged white. Wings grey-brown. Speculum black, glossed green, margined white above and below. Tail grey-brown, margined rufous. Central tail dark brown. S. America.
Also the genus Poecilonetta, with narrow speculum. Tail rufous or brown. Three species, viz.—
P. bahamensis. 19". Legs brown. Bill bluish, with two red spots at base of upper mandible. Crown, nape, lower neck, upper back, breast, and abdomen reddish, with black spots. Cheeks, sides of head, and throat white. Speculum fawn, glossy green, black and fawn. Bahamas, Antilles, and S. America.
P. galapagensis. 14". Similar to P. bahamensis, but the cheeks are white, thickly speckled brown. Galapagos Islands.
P. erythrorhyncha. 17". Legs dark ashy. Bill purple. Upper half of head dark brown. Sides of head and throat white, Neck grey, mottled black. Back brown, edged buff. Below whitish, with grey-brown spots. Speculum fawn, black and fawn. Tail and upper tail-coverts brown, edged grey. Africa and Madagascar.
Also the genus Elasmonetta. With edges of upper mandible fringed in front with a narrow soft membrane. Lamellae extremely developed. One species from New Zealand, viz. E. chlorotis, 18", legs slate-grey, bill bluish black, head and neck brown, collar white. Breast and abdomen chestnut, spotted black. Speculum cinnamon, black and rufescent white. Tail brown, edged lighter.
Also the genus Nesonetta. With wings very small, useless for flight. Lamellae moderate. One species, viz. N. aucklandica, 14", coloured similar to E. chlorotis. Aucklands.