192 
FULIGULINiE. AYTHYA. 
on the rhizomata of grasses, and other vegetable substances, 
zostera marina, worms, and mollusca. The flesh of this spe- 
cies is moderately good, hut inferior to that of the true Ducks 
and Teals. It departs in March and April, betaking itself 
to the Arctic Regions to breed. It is common to America 
and Europe. 
Poker. Red-headed Poker. Great- headed Wigeon. Dunker. 
Anas Eerina, Linn. Syst. Nat. i. 203. — Anas Ferina, Lath. 
Ind. Ornith. ii. 862. — Anas Ferina, Temm. Man. d’Ornith. 
ii. 868, — Aythya Ferina, Red-headed Pochard, MacGillivray, 
Brit. Birds, v. 
266 . Aythya Nyroca. White-eyed Pochard. 
Male sixteen inches long, with the bill dusky-blue, the 
unguis black ; the head, neck, fore part of breast and sides, 
chestnut-red ; the neck with an obscure brown band ; a white 
spot on the chin ; the rest of the lower parts white ; the up- 
per parts blackish-brown, glossed with purple ; the secondary 
quills white, with a subterminal black band ; the iris white. 
Female with the head, neck, fore part of breast and sides, 
reddish-brown ; the upper parts dusky, the feathers edged 
with paler ; the lower parts white, the wings as in the male. 
Male, 16. Female, 15. 
Of rare occurrence in England in winter ; but not hitherto 
observed in Scotland. 
Anas Nyroca, Gmel. Syst. Nat. i. 542. — Anas Nyroca, 
Lath. Ind. Ornith. ii. 869. — Anas leucophthalmos, Temm. 
Man. d’Ornith. ii. 876. — Aythya Nyroca, White-eyed Pochard, 
MacGillivray, Brit. Birds, v. 
The species of this genus appear to be in some respects 
more nearly allied to the Anatinse than those of the other 
genera, and at the same time to approximate closely to the 
Merganserinse, The Red-crested Pochard, in particular, 
geem s to differ little from the Mergansers. 
FAMILY XLIY. MERGAN SERINJE. MER- 
G ANSERINE BIRDS, OR MERGANSERS. 
Intimately allied in many respects to the Anatinse and 
Fuligulinse, and in others to the Divers and Cormorants, 
