43 
(Uromastyoc Hardwickii) from India; while in the ROOM X. 
Chinese Uromastyx ( Uromastyoc Revesii), they are Nat Hist 
small and smooth. 
In the lower part of the Case are the Chameleons, ani¬ 
mals long celebrated on account of the rapidity with 
which they change their colour; but most of the other 
Saurian Reptiles have the same faculty, and many in as 
great a degree. They are remarkable for the great 
distance to which they can protrude the tongue, in order 
to catch insects, which form their principal food. 
Chameleons are only found in the warm parts of the Old 
World, and the species are chiefly distinguished from 
each other by the form of the 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 Chame¬ 
leons, 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 
Brookes’ Chameleon, and in others on the tip of the 
nose, as in the Two-horned Chameleon. 
Case 5 contains the Snake-Lizards ( Ophisauri ), rep¬ 
tiles 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 which is dilated when the ani¬ 
mal 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 distinguished 
by their thighs being marked with a line of pores on 
the under side. In some of these, as the common Zo- 
nurus, the tail is furnished with armed scales, whilst in 
others, as the Common Cicigna, the caudal scales are 
unarmed. 
The 
