PLATE XXXI. 



Ichthyosaurus. 

 Fig. 



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., j 1 ^ nat. size. 



4. Skeleton, minus skull, of Ichthyosaurus lonchiodon, much reduced. 



5. Skull of do., side view, y^- nat. size. 



6. Four trunk-vertebrse of do., side view, -^ nat. size. 



7. Right coracoid of do, outer view, \ nat. size. 



