40 
LIAS OF ENGLAND AND WALES : 
The Lower Lias of Lyme Regis, Street near Glastonbury, and 
Barrow-on-Soar, is noted for its Saurian remains, probably because 
the beds have been extensively quarried or otherwise opened up 
at these localities. Many species of Ichthyosaurus and Plcsi- 
osaurus have been obtained ; some of the forms of Plesiosaurus 
being now known under the generic names of Eretmosaurus and 
Thaumatosaurus (see Figs. 27, pp. 37-39). The remains of 
Pterodactyl are now included under one species known as 
Dimorphodon macronyx. 
LOWER LIAS FISHES. 
FIG. 8. 
Dapedius pholidot^t,s, Ag., Lyme Regis. 
FIG. 9. 
Pholidophorus Bechei, Ag., Lyme Regis. 
A o-reat many Fishes have been obtained, principally from the 
neighbourhood of Lyme Regis, but some also from Barrow-on- 
Soar nnd other localities. Among these we may note Acrodus 
Aimingice and A. nobilis (teeth of which are known familiarly as 
'' Leeches," see Fig. 10), Dapedius (Fig. 8), Chondrostcus, 
