NORTH AMERICAN 
HERPETOLOGY. 
Famiry III. BUFONOIDEA. 
CHARACTERS. 
— 
. The head varies greatly in size and form; it may be pointed or truncated, 
smooth, or elevated in crests. 
[wy] 
. The upper jaw and palate, with one or two exceptions only, are entirely 
destitute of teeth. : 
3. The tongue is long, without a notch at its posterior extremity. 
4. 'The extremities vary in size, but there are always four fingers, free, and five 
toes, palmated or not. 
5. Most animals of this family have on their plantar surface a tubercle, sometimes 
greatly developed, which, from its position, resembles a sixth toe. 
Remarks. The animals of this family seldom leave their retreats until the grey 
Voi. V.—2 
