| Dinosauria. 
PLATE 37. 
Portions of the sacrum of the Hylæosaurus, 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 ۰ 
From the submerged Wealden Beds, South Coast, Isle of Wight. In the 
British Museum. 
