OF TILGATE FOREST. 
275 
analogy, there are, also, striking and important dif- 
ferences, in the structure of the primitive animals 
of our planet, and of those which are its present 
inhabitants. Of the Iguana, there are several 
species ; but the only skull we have had an oppor- 
tunity of examining, is that of an individual from 
Barbadoes ; we believe of 1. tuherculatao* 
JAW AND TEETH OF THE RECENT IGUANA.-f 
a a 
* Ossemens Fossiles, vol. v. pi. xvi. figs. 24, 25. 
The Iguanas are natives of many parts of America and the West 
India Islands, and are rarely met with any where north or south of the 
tropics. They are from three to five feet long, from the end of the 
snout to the tip of the tail. They inhabit rocky and woody places, 
and feed on insects and vegetables. Many of the Bahama islands 
abound with them ; they nestle in hollow rocks and trees ; their eggs 
have a thin skin like those of the turtle. Though they are not amphi- 
bious, they arc said to keep under water an hour. When they swim, 
they do not use their feet, but place them close to their body, and 
guide themselves with their tails ; they sicalloio all they cat whole. They 
are so impatient of cold, that they scarcely appear out of their holes 
but when the sun shines. — Shaw's Zoology., vol. iii. p. 199. 
-f I am indebted to my kind friend, Mr. Clift, of the College of Sur- 
geons, for the original drawings of these parts of the recent Iguana. 
T 2 
