5 8 
room x. there are several species, differing from one 
another in the length of the throat pouches, and 
in the colour of the wings. 
The rest of the Again m are furnished with a 
series of minute glands on the under side of 
the hind legs. Some of the species, peculiar 
to New Holland ( Gemmatophora ), have the 
same rough scales as the Mutable Lizards; as 
the Muricated Agama ( Lacerta muricata ). 
The Lophurae have a crest of large scales 
on the back, as the Amboina Lophura (Lac. 
Amboinensis'), which has been confounded with 
the Basilisk. 
The last group of Agamae, are peculiar for the 
tail being surrounded with verticillate bands 
of scales. In some of these ( Uromastyx ), the 
caudal scales are large and spinous; as the 
common Uromastyx (Stellio Spinipes) from 
Egypt, and Hardwicke’s Uromastyx ( Uromas - 
tyx Hardwickii) trom India; while in the 
Chinese Uromastyx (Uromastyx Revesii), they 
are small and smooth. 
In the lower part of the Case are the Cha¬ 
meleons, 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 also peculiar for the great 
distance to which they can protrude the tongue, 
in order to catch insects, which form their 
principal 
