206 
ON THE CLASSIFICATION OP BIRDS. 
C. aura. Wilson, 75. 1. (J^.182.) Californianus. P.C. 51. 
atratus. Wilson, 75. 2 . 
Neophron, Savigny. Bill much lengthened, and re- 
markably slender. Nostrils 
longitudinal, nearly medial; 
cere occupying two thirds the 
length of the bill. Face and 
part of the neck naked. Tail 
feathers 14. The tenuirostral type. 
N. percnopterus. Ois. d’Af. pi. 14. ( Jig . 183 .) 
Cathf,tubus, Sw.* Bill short, thick, curved almost 
from the base, but the tip not hooked. Nostrils 
basal, and membranaceous ; the aperture large, round, 
central, and nearly naked. Head and neck with only 
a few scattered feathers. Wings short, rounded. Tail 
broad, of eighteen feathers. Feet strong; anterior 
scales irregularly hexagonal : toes large ; the lateral 
of equal length, and very little shorter than the middle 
toe : all the claws long and slender, (fy. 92 . Vol. I. 
p. 284 .) The rasorial type. 
C. Australis. 111. of Orn. pi. 140. 
Gypaetus, Storr. Bill strong, lengthened : upper man- 
dible elevated near the end, 
which is hooked; under man- 
dible provided, beneath, with IS 4 - 
a bunch of setaceous bristles, 
directed forwards. Nostrils oval, covered and de- 
fended by bristles. Feet short : the three anterior 
toes united to their base by a membrane ; the middle 
toe very long : claws but slightly curved. Wings 
long ; the first quill rather shorter than the second, 
the third longest, (fiff.184,.) The fissirostral type. 
T. barbdtus. Ktlwards, lOG. Europe. 
Family F.^LCONID.a^, The Fakonn . 
Size moderate. Head and neck clothed with feathers. 
Bill curved, more or less, from the base : the tip of 
• The Alceturus of Mr. Gray; but thia name having been previously 
given by Vieillot to a very distinct group of flycatchers, which I have re- 
tained, it became necessary for me to propose another. 
