PLATE IV. 



Pig. Page 



1. Peloneustes phihirclius, Seeley, sp. ; skull, from below : one-third nat. 



size. [E. 3803.] 35 



2. Ditto ; skull, from above: one-third nat. size. [R. 2679.] 35 



3, 3 a. Ditto ; tooth, from outer side (3) and from front (3 a) : nat. size. 



[a. 2679.] 202 



4, 4 a. Ditto ; tooth, from behind (4) and from outer side (4 a) ; nat. size. 



[R. 2679.] 202 



5. Ditto; tooth, from front: nat. size. 



[R.1253.] 202 



a.p.v., anterior interpterygoid vacuity. 



hoc, basioccipital. 



col., columella cranii (epipterygoi ■! I. 



fr., frontal. 



i.nar., internal nares. 



l.p., lateral processes of basioccipital. 



»;».)•., maxilla. 



nar., external nares. 



•pal., palatine. 



par., parietal. 



j-fls., parasphenoid. 



p./., pineal foramen. 



pm.i:, prernaxilla. 



pi.f., postfrontal. 



p. orb., postorbital. 



p.p.v., posterior interpterygoid vacuities. 



pi., pterygoid. 



q., quadrate. 



sq., squamosal. 



t.p., transpalatine. 



i'., vomer. 



