23 
GENUS Il. MERGANETTA. 
Ext. Cuar. Pedes digitis posterioribus lobatis, mediis longis- 
simis. ostrum a baso ad apicem angustatum apices vix unguiculata. 
Nares ovales, parvee, versus medium rostri posite. 
Ext. Cuar. Feet with the hind toe lobated, the middle toe 
longest. Bill tapering to the end, which is slightly unguiculated. 
Nostrils small, placed in the middle of the bill. Tail feathers long, 
and stiff. | 
MERGANETTA. Could. 
Type. Merganetta armata. 
SYNOPSIS SPECIERUM. 
ANSERANAS SEMIPALMATUS. 
Ans.—Capite colloque nigro, dorso superiore albo. 
SEMIPALMATED GOOSE. 
Ans. with the head and neck black, the upper part of the back 
white. 
FT. IN. IN 
MULIG Clidioediina canis pon. ba 3 4 POR on ced cun canoes 4 
5 Ee a 4 Middle toe ......4.. 42 
Ans.: with the upper part of the back, rump, and below, with 
the exception of the tibiee, white ; the remainder and the tibize glossy 
black; legs and bill orange; the nail of the latter horn-colour. 
Anseranas semipalmatus Less. 
Anas semipalmata ...... Linn. Trans. iv. 108. 
Lath. Ind. Orn. App. 69. 
Semipalmated Goose ... Lath. Gen. Syn. Sup. 2, 347. 
Anas melanoleuca ...... Lath. Ind. Orn. App. 69. 
CIO aon tis eteseset'eses Linn. Trans. vol. xv. p. 888, pl. 
. xiii, xiv. 
Inhabits New Holland, and utters a shrill whistling note. ‘ 
Mr. Yarrell, in vol. 15, p. 883, gives the following anatomical 
peculiarities of thisbird. The trachea “was situated on the outside 
of the left pectoral muscle, under the skin, sufficiently raised under 
the wing that respiration would not be impeded when the bird rested 
with its breast on the ground, the parallel tubes being firmly attached 
