PLATE I. 



Goniopholis crassidens. 



Fig. 



1. Premaxillary extremity of skull, palatal surface. 



2. Premaxillary extremity of skull, outer surface. 



3. Crown of large maxillary tooth. 



4. Crown of small maxillary tooth. 



5. Symphysial extremity and part of ramus of mandible, upper or oral surface. 



6. Crown of small mandibular tooth. 



7. Two hindmost mandibular teeth. 



8. Large and small mandibular teeth from near the middle of the series. 



The subjects of figs. 1 — 4 are from the Wealden of Cuckfield. 



The subjects of figs. 5 — 8 are from the Limestone Series of the Middle Purbeck. 



All the figures are of the nat. size. 



