Order— CHBLONIA. 



Genus — Platemys . 

 PLATE 52. 



Fig. 



1. Hyosternal element of the plastron, Platemys Mantelli. 



2. The same element of the plastron, Platemys Brodiei. 



3. Hyposternal element of the plastron, Platemys Dixoni. 



4. Inner surface of hyposternal element, Platemys (?). 



From the Wealden of Tilgate Forest. 



