) 4 
364 ON THE CLASSIFICATION OF BIRDS. 
culmen slightly indented at the 
termination of the nostrils: go- 
nys nearly straight. Feet long, 
three-toed. The lateral toes very | 
short; the outer connected by a membrane to the base 
of the middle toe ; the latter very long, and the claw 
serrated. 
T. isabellinus. Pl. Enl.'795. Burchellii. Part 5. No. 174. 
Orientalis. Part 5. No. 173. 
Ammoptila, Sw. Bill lengthened, conic: both man- 
dibles of equal thickness: gonys ascending ; the cut- 
ting margins considerably inflected. Feet moderate, 
three-toed. Lateral toes and claws equal ; middle toe — 
rather short, the claw entire. 
A. charadroides. Pl. Enl. 918. (fig. 321. 6) 
a 
OrperR NATATORES. The Swimmers. 
Famuy ANATIDA. Ducks. 
Bill very broad; the sides furnished with lamellar plates. 
Suzsram. PHQENICOPTIN &. 
Legs very long. Grallatorial. 
Pue@nicorrerus, Linn. Flamingo. Size large. Bill 
thick, cylindrical, short, abruptly bent from the 
middle: the under mandible considerably thicker 
than the upper, which is greatly depressed ; the 
margins lamellar. 
P. Europeus. Pl. Enl. 63. Americanus. Wilson, 66. f. 4. 
Susram. ANSERINA. Geese and Swans. t 
Feet lengthened, moderate. Rasorial. 
Cyenus, Antiq. Swans. Size large. Base of the bill 
tumid, fleshy, and naked. Neck remarkably long -f 
Feet short. Hinder toe simple. 
S. Bewickii. Selby, pl. 47*. 
+ The subgenera of this group have not yet been determined. 
