276 
ANATIN^. ANAS. 
teen feathers. (Esophagus rather narrow, dilated on the 
lower part of the neck ; stomach an extremely muscular, 
transversely elliptical gizzard ; intestine long and rather 
wide ; coeca long. Trachea of the males, with a transverse 
bony unsymmetrical dilatation at the inferior larynx. 
386. 1. Anas Boschas, Linn. Mallard. 
Plate CCXXI. Male and Female. 
Male with the feathers of the head and neck short, blended, and 
splendent ; tail much rounded, of sixteen acute feathers, of which the 
four central are recurved ; bill greenish-yellow, feet orange-red ; head 
and upper part of neck deep green ; about the middle of the neck a white 
ring ; its lower part anteriorly, and the fore part of the breast, dark 
brownish-chestnut ; fore part of back light yellowish -brown, rest of the 
back brownish-black, the rump black, splendent with green and pur- 
plish-blue, as are the recurved tail-feathers ,* upper surface of wings 
greyish-brown, scapulars lighter, except their inner webs, and with the 
• anterior dorsal feathers, minutely undulated with brown, speculum on 
about ten of the secondaries purple and green, edged with velvet- 
black and white, the anterior bands of these colours being on the 
secondary coverts ; breast, sides, and abdomen very pale grey, mi- 
nutely undulated with darker; lower tail-coverts black. FemUle with 
the bill black in the middle, dull orange at the extremities and along 
the edges ,* upper parts pale yellowish, streaked and spotted with 
dusky ; feathers of the head narrowly streaked, of the back with the 
margins and a central streak yellowish-brown, the rest dark, the sca- 
pulars similar, but with the light streak on the outer web ; speculum 
as in the male, but with less green ; lower parts dull ochre, deeper on 
the lower neck, faintly streaked and spotted with brown. 
Makj 24, 36. Female^ 22. * 
Breeds from Texas sparingly throughout the United States. Co- 
lumbia River, and Fur Countries. Abundant during winter in all the 
Southern Districts. Not found in Maine, or farther eastward. 
Mallai’d, Anas Borchas, Wils. Amer. Orn. v. viii. p. 112. 
Anas Borchas, Bonap. Syn. p. 383. 
Anas (Borchas) domestica, Mallard, Swains. & Rich. F. Bor. Amer. v. ii. p. 142. 
Mallard Duck, Anas domestica, Nutt. Man. v. ii. p. 378. 
Mallard, Anas Borchas, Aud. Orn. Biog. v. iii. p. 164. 
387. 2. Anas obscura, Gmel. Dusky Duck. 
Plate CCCII. Male and Female. 
Tail much rounded, of eighteen acute feathers, none of which are 
recurved ; bill yellowish-green ; feet orange-red, the webs dusky ; 
