TAB. VI. 



Portions of the sacrum of the Hylaeosaurus, half nat. size. 



Fig. 



1. Under view of the third and fourth, with portions of contiguous anchylosed, 



sacral vertebrae. 



From the Wealden of Tilgate, Sussex. In the British Museum. 



2. Side view. 



3. Under view. 



4. Upper view of the third, with portions of the second and fourth, sacral vertebrae. 



From the submerged Wealden Beds, South Coast, Isle of Wight. In the 

 British Museum. 



