ANATIDZ, DUCKS. —GEN. 263, 264, 265, 266-8. 291 
263. Genus HARELDA Leach. 
Long-tailed Duck. South-southerly. Old-wife. Tail of 14 narrow 
pointed feathers, in the ¢ in summer the central ones very slender and much 
elongated, nearly or quite equalling the wing; nail of bill occupying the 
whole tip; seasonal changes remarkable. ¢ in summer with the back and 
the long narrowly lanceolate scapulars varied with reddish-brown, wanting 
in winter, when this color is exchanged for pearly-gray or white; general 
eolor blackish or very dark brown, below from the breast abruptly white ; 
no white on the wing; sides of head plumbeous-gray; in winter the head, 
neck and body anteriorly, white, but the gray cheek-patch persistent, and a 
large dark patch below this ; bill at all seasons black, broadly orange-barred. 
9 without lengthened scapulars or tail feathers, the bill dusky greenish, and 
otherwise different ; but recognized by presence of head- and neck-patches, 
and absence of white on the wing. Length 15-20, or more, according to 
tail; wing 8-9. N. Am., northerly, coastwise; U. S. only in winter; 
common. Also Northern Europe. Wuts., viii, 93, pl. 70, f. 1, 2; Nurv., 
Pisce ATDeavioto., pl. 4105 Bp. 800. +: . . . . « GLACTALIS. 
264. Genus CAMPTOLAMUS Gray. 
Labrador, or Pied Duck. Bill enlarged towards end by membranous 
expansion, the nostrils in its basal third; cheek feathers rigid; g with the 
body and primaries black; rest of the wing, with neck and head, white, with 
a black collar and lengthwise coronal stripe; 9? plumbeous gray; about 2 
feet long; wing 9. N. Atlantic Coast, to middle districts in winter; 
formerly common, now apparently rare. Wiuzs., viii, 91, pl. 69, f. 6; 
Nuorr., ii, 428; Aup., vi, 329, pl. 400; Bp., 803. . . . LABRADORIUS. 
265. Genus HISTRIONICUS Lesson. 
- Harlequin Duck. Bill very small and short, rapidly tapering to tip, which 
is wholly oceupied by the nail, and with a membranous lobe at its base ; 
tertiaries curly ; plumage singularly patched with different colors; g deep 
leaden-bluish, browner below; sides of head, and of body posteriorly, 
chestnut; coronal stripe and tail black; a white patch at base of bill, 
another on side of occiput, of breast and of tail, two transverse ones on 
side of neck, forming a nearly complete ring, and several on the wings; 
a white jugular collar; speculum violet and purple; @ dark brown, paler 
below, whitening on belly; a white patch on auriculars and before eye. 
15-18; wing 8; Northwestern Europe; N. Am., northerly, and entirely 
coastwise, U. S. only in winter, not abundant. Whus., viii, 139, pl. 72, 
f. 4; Nurr., ii, 448; Aup., vi, 374, pl. 409; Bo., 799. . . TORQUATUS. 
266-8. Genus SOMATERIA Leach. 
* Bill without frontal process, not feathered to the nostrils. (Polysticta.) 
Steller’s Hider. Head white, with a pearly gray tinge, a green occipital 
