DESCRIPTION OF THE PLATES. 
PLATE XVII. 
A fossil crab from Shepey. 
Insects in stone from Pappenheim. 
Insects on coal-slate, as figured by Lhwydd. 
A fossil crab from Shepey. 
A fossil shrimp from Anspach. 
The impression of a fossil, the analogue of which is entirely unknown. 
The claw of a crab from Maestricht. 
An extended trilobite from Dudley. 
A fossil crab from the East Indies. 
A trilobite from Llanelly, b. its inner surface. 
A contracted trilobite from Dudley, a. the eye enlarged. 
The remains of some large unknown insect. 
Another species of trilobite. 
Another species, with a caudal process. 
Another species, imbedded in ironstone. 
The remains of an unknown insect from Dudley. 
PLATE XVIII. 
Fig. 1. A fossil body, resembling part of a tortoise, from Gloucestershire. 
2. The inferior part of a fossil tortoise from Shepey. 
3. The fossil head of a tortoise from Shepey. 
4. A fossil shell from the hard chalk of Sussex. 
5. \ Fossil vertebrae of crocodiles from Cuvier, showing the existence of two distinct fossil 
6. J species in France. 
7. A sketch of the fossil lower jaw of a crocodile from Les Annales du Museum. 
8. One of the vertebrae of the tail of the fossil animal of Maestricht. 
9. A single scale of a fish, with its processes of attachment. 
