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ON THE CLASSIFICAT! 
NaucierRus, Vigors. Bill ee 
hooked, with a small and moa nba 0! 
the middle. Orbits and sides of the head th 
vided with feathers. Wings very long ; 
and second quill internally emarginate towagll 
tip. Tail very long and deeply forked. Tarsi ¥ v 
short, not longer than the hind toe and claw; plum 
half way in front, the remaining portion covere 
with angulated venien Toes short; the two later 
almost equal, the hinder nearly equal to the in s 
Claws grooved beneath. 
N. furcatus. Wils. 51.2. Africanus. Vieil. Gal. pl. 85. 
Elanus, Savigny. Bill small, much compressed, th 
cutting margins slightly sinuated; the tip of the Re 3 
mandible very much hooked and prolonged ; the ce: 
short ; nostrils large, oval. Wings very long, acu mi 
nated, reaching beyond the tail; the second qui 
longest ; the first emarginated near the tip of the inne 
web. Tail short, almost even. Feet short, thick: 
the tarsus half feathered: 3 the lower part covered with» 
minute roundish subequal scales. Toes thick and free 
the outer toe much shorter than the inner, and of 
equal length to the hinder toe. Claws large; the latera 
and the hinder ones smooth and round ; the mid le 
claw sharply carinated on its inner side, ‘ 
E. melanopterus. Le Vail. Af. 36, 37. 
Gampsonyx, Vigors. General structure of Elanus, 
the wings are shorter, and the tail 
longer. Tarsus more lengthened, 
and less plumed in front. Tail 
even. Outer toe shorter than 
the inner. Claws slender, nearly 
cylindrical. (fig. 188.) 
G. Swainsonii. Zool. Journ. i. 65. 
Suzsram. BUTEONINEA. Buzzards. 
Size moderate: form slender. Bill small, slightly fes : 
tooned, the base broad, the cere occupying one third the 
length of the bill. Head depressed and unusually broa ad. 
