PLATE XXXI. 
Ichthyosaurus. 
Pi&. 
1. Ichthyosaurus platyodon, skeleton, dorsal aspect, much reduced. 
2. Skull of do., side view, nat. size. 
3. Parts of thorax and scapular arch of do., 1^2 size. 
4. Skeleton, minus skull, of Ichthyosaurus lonchiodon, much reduced. 
5. Skull of do., side view, -j-q nat. size. 
6. Pour trunk-vertebrae of do., side view, i-q- nat. size. 
7. Right coracoid of do, outer view, \ nat. size. 
