﻿PLATE XVI. 



Omosaurus armatus. 



Fig. 



1 . Side-view of a middle caudal vertebra. 



2. Back-view of the same. 



3. Under-view of the centrum of the same. 



4. Under-view of two middle caudal vertebrae, the foremost wanting its haemal arch, of 



Monitor niloticus. 



5. Side-view of a middle caudal vertebra of the same. 



Figs. 1 — 3 are figured a little more than half the natural size ; figs. 4 and 5, natural 

 size. The subject of figs. 1 — 3 is from the Kimmeridge Clay at Swindon, Wilts. In 

 the British Museum. 



