﻿PLATE XX. 



Omosaurus armatus. 



Fig. 



1. Haemal or under surface of the ischium. 



2. Proximal or acetabular end of the same. 



3. Distal or symphysial end of the same. 



4. Haemal or under surface of the right pubis. 



5. Neural or upper surface of the same. 



6. Proximal end of the same. 



7. Distal end of the same. 



8. Haemal or under surface of the pelvis of an Egyptian Lizard (TJroma&tyx spinipes). 



9. Neural or upper surface of the same. 



Figs. 8 and 9 are of the natural size ; the other figures are two ninths the natural size. 



The subjects of the latter are from the Kimmeridge Clay at Swindon, Wilts. In the 

 British Museum. 



