TAB. III. 
Plesiosmmis dolichodeims^ nat. size. 
Fig. 
1. Skull and seven cervical vertebrae. 
2. Dentary elements of lower jaw. 
3. Front view of premaxillaries and interlocked fore teeth of both jaws, those of 
the lower in outline. 
4. Middle cervical vertebra, side view, 
5. Ib., under view. 
6. Ib., front view. 
From the Lower Lias of Charmouth. In the British Museum. 
