242 GIGANTIC TERRESTRIAL SAURIANS. 
doubt of the near connection of this most gi- 
gantic extinct reptile with the Iguanas of our 
own time. When we consider that the largest 
living Iguana rarely exceeds five feet in length, 
whilst the congenerous fossil animal must have 
been nearly twelve times as long, we cannot 
but be impressed by the discovery of a resem- 
blance, amounting almost to identity, between 
such characteristic organs as the teeth, in one 
of the most enormous among the extinct reptiles 
of the fossil world, and those of a genus whose 
largest species is comparatively so diminutive. 
According to Cuvier, the common Iguana in- 
habits all the warm regions of America : it 
lives chiefly upon trees, eating fruits, and seeds, 
and leaves. The female occasionally visits the 
water, for the purpose of laying in the sand 
its eggs, which are about the size of those of a 
pigeon.* 
sits subjacent to this marine formation, had been drifted into an 
estuary. This unique skeleton is now in the museum of Mr. 
Mantell, and confirms nearly all his conjectures respecting 
the many insulated bones which he had referred to the Igua- 
nodon. 
* In the Appendix to a paper in the Geol. Trans. Lond. (N. S. 
Vol. III. Pt. 3) on the fossil bones of the Iguanodon, found in 
the Isle of Wight and Isle of Purbeck, I have mentioned the 
following facts, illustrative of the herbivorous habits of the living 
Iguana. 
In the spring of 1829, ''Mr, W. J. Broderip saw a living 
Iguana, about two feet long, in a hothouse at Mr. Miller's nur- 
sery gardens, near Bristol. It bad refused to eat insects, and 
