— 298 ' ON THE CLASSIFICATION OF BIRDS. 
Famity BUCERIDZE. AHornbills. — 
The characters of this family are those of the ahs gem an | 
Buceros, Linn. Bill enormous, generally furnished with 
protuberances of different shapes at the base of the 
upper mandible, beyond which the bill is much com- 
pressed, and both mandibles curved downwards ; the 
margins entire. Nostrils lateral, basal, very small, oval, 
or round, and almost naked. Wings short or moderate, 
rounded. ‘Tail rather lengthened ; the feathers nar- 
row at their base, and obtuse at their tips. Feet 
short. Middle toe as long as the tarsus ; lateral toes 
unequal, the outer united to the middle as far as the 
first joint ; hinder toe shortest. Claws short, thick. 
The following pia, have been chiefly cnn 
M. Temminck : | 
B. rhinoceros. Pl. Enl. 934. cineraceus. Tem. Nepal. | 
monoceros. Ib. 873. cavatus. Shaw. 
lunatus. Pl. Col. 546. Malabaricus. Raff. 
cassidix. Ib. 210. galeatus. L. T. xiv. p. 578. 
Abyssinicus. Pl. Enl.779. pucoran. Raff. 
hydrocorax. Ib. 283. gracilis. Pl. Col. 535. 
galeatus. Ib. 933. convexus. Ib. 530. 
elatus. Pl. Col. 521. f. 1. exarhatus. Ib. 211. 
cylindricus. Ib. 521. f.2. sulcatus. Ib.-69. 
galeritus. Ib. 520. buccinator. Ib. 284. 
antracicus. Ib. 529. Panayensis. P]. Enl. 780, 781. 
corrugatus Ib. 531. nasutus. Ib. 890. 
comatus. Raff. Pl. Col. | erythrorhynchus. Ib. 260. 
Malayanus. Ib. Nepalensis. Hodgson. 
Trisz Ill. SCANSORES. 
FAMILY RAMPHASTID&. The Toucans. 
Bill enormous, vascular within ; the margins serrated. 
Wings short, rounded. Feet with two toes before, and 
two behind. 
Rampnastos, Linn. Bill smooth. Nostrils entirely _ 
concealed, and placed at the edge of the thickened — 
frontlet of the bill. Wings short, rounded ; the fou 
