TAB. XXII. 



Ichthyosaurus campy lodon, nat. size. 



Fig. 



1. Side view of the body or centrum of a vertebra of the trunk. 



2. Front view of ditto. 



3. Section of a similar vertebra, showing the form and depth of the opposite 



articular surfaces. 



From the Grey-chalk of the Round-down Tunnel, near Dover. In the Col- 

 lection of H. W. Taylor, Esq., of Brixton Hill. 



