Enaliosauria. 



PLATE 4. 



Fig. 

 1. 



1*. 



2. 



2*. 



2**, 



Ichthyosaurus campylodon, nat. size. 



Outer side of the dentary bone of the lower jaw. 



Form of the section of the fractured end. 



Inner side of a portion of the right ramus of the same lower jaw, formed by the 



dentary piece, 32, with the terminations of the splenial pieces, 31. 

 Form of the section of the hinder fractured end. 

 Form of the section of the fore-part of the same portion. 

 Fragment of a portion of the right premandibular bone. 



One of the teeth, from the base of which part of the thick cement has been 

 removed. 

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

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



