36 
FALCONINJE. 
White Vulture, Brown Vulture. Pharaoh^s Chicken. 
Vultur Percnopterus, Gmei. Syst. Nat. i. 249. Adult, j 
Vultur fuscus, i. 248, Young. — Cathartes Percnopterus, j 
Temm. Man. d’Ornith. i. 8 ; iii. 6. — Neophron Percnopterus, j 
White Neophron, MacGillivray, Brit. Birds, iii. 166. I 
FAMILY II. FALCONINJE. FALCONINE j 
BIEDS, OR HAWKS. ; 
Body robust, moderate, or slender ; neck short ; head | 
rather large, roundish, little convex above. Bill short, I 
stout, compressed toward the end ; upper mandible ce- | 
rate, with the edges sharp, and a sinus or notch near i 
the tip, which is elongated, decurved, somewhat trigonal, 
acute ; lower mandible with the angle wide, the dorsal | 
line convex, the edges sharp and decurved or emarginate ‘ 
close to the rounded tip. Tongue fleshy, deeply emar- 
ginate and papillate at the base, with the sides nearly 
parallel, the tip rounded and horny beneath ; oesophagus 
very wide, dilated into a large crop ; proventriculus wide ; 
stomach large or of moderate size, roundish, with the mus- 
cular coat thin, the epithelium soft, and more or less ru- 
gous ; intestine generally rather short and of moderate 
width, sometimes very long and narrow, being in either 
case of moderate capacity ; coeca extremely small, some- 
times wanting ; cloaca large and globular. Trachea con- 
siderably flattened, of slender rings ; inferior larynx with 
a single pair of muscles, and the last entire ring par- 
titioned. Eyes large, lateral, somewhat inclined for- 
wards ; both eyelids equally mobile. Nostrils small or 
of moderate size, varying in figure. Apertures of ears 
rather large, simple. Legs very muscular ; tarsus short 
or of moderate lei^gth ; toes four, the first large and 
stout, the third long, the second larger than the fourth, 
the anterior somewhat webbed at the base, all scutellate 
toward the end, padded and papillate beneath ; claws 
