366 ON THE CLASSIFICATION OF BIRDS. 
Cekeopsis, Lath. Pigeon 
Goose, {fig. 327-) BiU 
short, very much thick- 
ened at its base. Nos- 
trils central. Tarsus 
with hexagonal scales. 
Toes semipalmated. 
The grallatorial type. 
C. australis. P. C. 206. 
SuBFAM. ANATIN.®, Sw. Miner Pitch. 
Bill hroad and lengthened Nostrils basal. Legs very 
short. Hinder toe slightly lobed. {fig. SiQ. d) 
Mabica, Leach. Widgeon. Bill very short and small, 
of equal breadth throughout ; the tip not narrowed. 
Tail long, pointed. 
M. Americana. Wilson, pi. 69. f. 4. 
Dendbonessa, Sw. Tree 
Ducks. {fig.S^S.) Bill 
small, short, rather 
compressed ; the tip 
contracted. Nostrils 
, towards the middle of 
the bill. Head crested. 
Tertial quills recurved. 
D. sponsa. Wilson, pi. 70. f. .S. galericulata. Edw. pi. 210. 
Anas, Linn. Typical Ducks. Bill flattened from the 
base, longer or as long as the head ; the tip broad, 
and never contracted. 
Chauliodus, Sw. {fig. 330. b) Bill of equal breadth 
throughout. The lamina fine, but not much pro- 
jecting beyond the margins. 
C. Strepera. Selby, pi. .61. 
Malacorynchus, Sw. {fig. 329. «) Bill like the last ; but 
the substance soft, and the tips of the upper mandi- 
ble furnished on each side with a loose angular skin. 
Australia. 
