38 
LIAS OF ENGLAND AND WALES 
LOWER LIAS SAURIANS. 
FIG. 4. 
Skull of Ichthyosaurus communis, Conyb., Lyrae Regis. 
FIG. 6. 
Skull of Ichthyosaurus latifrons, Konig., Barrovv-on-Soar, nat. size. 
