59 
principal food. Chameleons are only found in Room x. 
the warm parts of the Old World. 
The species are chiefly distinguished from 
each other by the peculiarity of the shape of 
their head. In the common Chameleon, the 
occiput is arched and compressed, whilst, in the 
Senegal species, it is flat; some of the species, 
as the Eared and Hooded Chameleons, have 
the back part of the occiput furnished with two 
fleshy lobes; whilst the Panther and Cape Cha¬ 
meleon have the front of the chin furnished 
with fleshy processes. Others have the head 
armed with horns, which in some are placed 
over the eye-brow, as in Brooke’s Chameleon, 
and in others on the tip of the nose, as in the 
Two-horned Chameleon. 
Case 5 contains the Snake-Lizards ( Opfii - 
sauri ), reptiles which much resemble snakes in 
appearance, and are covered with regular, and 
uniform scales. These are divided into two 
sections, according to the form of the scales on 
the sides, which in some ( Ptygopleura ) are 
small, making a fold, that is dilated when the 
animal has eaten a full meal; and in others, the 
scales of the sides are similar to those on the 
body. 
The Zonuri ( Zonurus ) have four distinct, 
moderately long legs, and exposed ears. 
The African Lizards of this group are dis¬ 
tinguished by their thighs being marked with a 
line 
