PLATE XXVIII. 



Ichthyosaurus. 

 Fig. 



1. Restoration with skeleton and included foetus {Ich. communis) 



2. Skull, side view {Ich. acutirostris). 



3. lb., ib. {Ich. longirostris). 



4. Scapular arches and humeri {Ich. communis). 



(These figures are more or less reduced.) 



5. Slab of Lias, with bones and part of tegumentary sheath of hind fin, nat. size {Ich. 



communis ?). 



