PLATE I. 



Fig. Pago 



1. Pliosaurus ferox, Sauvage, sp. ; skull, from below: one-fifth nat. size. 



[R. 2880.1 2 



2. Ditto ; skull, from above : one-fifth nat. size. 



[B. 2680.] 



a.p.v., anterior interpterygoid vacuity. 



hoc, basioccipital. 



col., columella cranii (epipterygoid). 



ft:, frontal. 

 i.nar., internal nares. 

 j; jugal. 

 L, lachrymal. 



mx., maxilla. 



?n., nasal. 



nar., external nares. 



pal., palatine. 

 pal.f., palatine foramen. 



par., parietal. 

 par.p., paroccipital process. 



pas., parasphenoid. 



p.f., pineal foramen. 



pmx., premaxilla. 



po.f., postfrontal. 



p.orb., postorbital. 



p.p.v., posterior interpterygoid vacuity. 



pr.f., prefrontal. 



pt., pterygoid. 



q., quadrate. 



soc, supraoccipital. 



'Is.orb., ? supraorbital bone. 



s.o.v., suborbital vacuity. 



sq., squamosal. 



t.p., transpalatine. 



v., vomer. 



