PLA.TE XXX. 
Ichthyosaurus intermedius. 
Fig. 
1. Skeleton, from tlie dorsal aspect, nat size. 
2. Sj-mphysis mandibulae, under view, ^ nat. size. 
Ichthyosaurus communis. 
3. Portion of skeleton, from the ventral aspect, y nat. size. 
4. Symphysis mandibulae, under view, y nat. size. 
5. Bones of pelvic arch, left side, y nat. size. 
