PLATE II. 
Chelone gigas^ one third natural size. 
Fig. 
1 . Side view of the skulL 
2. Under surface of the skulL 
3. Back view of the cranium. 
From the London Clay, Isle of Sheppey. In the Collection of W. H. Shrubsole, 
Esq., E.G.S., of Sheerness-on-Sea. 
