﻿PLATE IV. 



Fig. 



1. Neural surface of centrum of anterior trunk-vertebra of Chondrosteosaurus gigas: 



two thirds nat. size. 



2. Hind surface of anterior trunk-vertebra of an Eagle {Haliatus albicitta) : nat. size. 



3. Neural surface of the centrum of the same vertebra : nat. size. 



The subject of fig. 1 is from the Wealden of the Isle of Wight. In the British 

 Museum. 



