19 
angustatum. Lamell@ extremo parte omnino obliterate. Nares 
_lineares, versus media rostri posite. Cauda maribus elongata. 
Ext. Cuar. Feet with the posterior toes lobated, the outer one 
scarcely equal to the middle. Thighs feathered. Bill moderate, 
narrowed from the base to the apex. JLamelle altogether obliterated 
at the points. Nostrils linear, situated about the middle of the bill. 
Tail, in the male, elongated. 
Harewtpa. Ray, Leach. 
Anas. Linn. 
QUERQUEDULA. JBriss. 
CianeuLa. Fem. 
Tyre. Harelda Glacialis. 
GENUS XI. CLANGULA. 
Ext. Cuar. Pedes digitis posterioribus lobatis, externis mediis 
vix equantibus. TZibie plumose. ostrum parvum, capite brevius, 
a basi ad apicem angustatum. Nares ovales, medium versus rostri 
posite. Lamelig ad apicem pene obliterate. Cauda rectricibus 
rigidis, sed ad apicem flexilibus. Lingua obtusa, ad apicem appen- 
diculatz, lateribus ordine uno setarum flexilum instructis. 
Ext. Cuar. Feet with the posterior toes lobated, the outer ones 
scarcely equal to the middle. Tibie feathered. ill small, shorter 
than the head, narrowed from the base to the point. Nostrils oval, 
placed towards the middle of the bill. JLamelle obliterated at the 
top. Tail with the quills stiff, but flexible at the points. Tongue 
obtuse, with an appendage at the point, the sides garnished with one 
row of flexible bristles. : 
Anas. Pars., Linn. 
CuaneuLa. Leach, Flem. 
QUERQUEDULA. Briss. 
Tyre. Clangula vulgaris. 
SUB FAM. V. ERISMATURINA. 
Ext. Cuar. Aostrum ad basin altius-quam latum. Pedes magni, 
digitis posterioribus lobatis, externis et intermediis inter se zequalibus. 
fiectrices Caude longe et valide. Ale breves. 
Ext. Cuar. Bill higher than broad. Feet large, posterior toes 
lobated, the outer toe equal tothe middle. Tail feathers, long and stiff. 
