LONG-TAILED DUCK. 107 
other in that of winter. You will also find in the same plate the first 
figure ever given of an adult female, accompanied with as many young- 
lings as I could conveniently introduce. Whtson gave the figure of a 
young male in the first winter as that of a female. 
Anas eraciazis, Linn. Syst. Nat. vol. i. p. 203.—Lath. Ind. Ornith. vol. ii. p. 864. 
Furieuta exactatis, Ch. Bonaparte, Synopsis, p. 395. 
Lone-TaiLeD Ducx, Anas exactaLis, Wils. Amer. Ornith. vol. viii. p. 93. pl. 70. 
fig. 1. male, pl. 70. fig. 2. female. 
Lone-TAILED Duck, Haretpa exactatis, Richardson and Swainson, Fauna Bor. 
Amer. vol. ii. p. 460. 
Lone-TaILED Duck, WVuttall, Manual, vol. ii. p. 453. 
Adult male in summer. Plate CCCXII. Fig. 1. 
Bill shorter than the head, higher than broad at the base, gradually 
depressed toward the end, the sides nearly parallel, the tip rounded. 
Upper mandible with the basal angles inconspicuous, the dorsal line 
descending and straight to the unguis, then convex and decurved, the 
ridge broad and flattened at the base, convex toward the end, the sides 
sloping and convex, the unguis roundish, the edges membranous, very 
narrow at the base, enlarged towards the end, with about thirty lamel- 
lz ending in a projecting point. Nostrils sub-basal, oblong, direct, 
large, pervious, near the ridge, in an oblong groove with a soft mem- 
brane. Lower mandible flat, a little curved upwards, the angle very 
long and narrow, the unguis broad and rounded, the erect edges with 
about forty direct lamelle. 
Head oblong, compressed, of moderate size. Eyes of moderate 
size. Neck rather short. Body compact, rather elongated, and some- 
what depressed. Feet short, stout, placed rather far behind; tarsus 
very short, compressed, anteriorly with a series of small scutella, ex- 
ternally of which are five in a line with the outer toe, the rest reticu- 
lated with angular scales. Hind toe very small, with a free membrane 
beneath ; outer toe, which is the longest, almost double the length of 
the tarsus, middle toe scarcely shorter than outer; anterior toes with 
numerous narrow scutella, webbed, the margin of the webs concave ; 
inner toe with a two-lobed expanded margin. Claws small, slightly 
arched, blunt. 
Plumage dense, blended, elastic, stiffish ; but soft and glossy on the 
head; the feathers broad and slightly rounded at the end. Scapulars 
