PLATE XII. 



Fig. Page 



1. Metriorhynchus Irachyrliynchus, Deslongchamps ; skull, from above : one-third 



nat. size. [R. 3700.] 198 



2. Ditto; palatal view of skull : one-third nat. size. 



[R. 3700.] 198 



als., alisphenoid. 



hoc, basioccipital. 

 bsp., basisphenoid. 

 eu.m., median eustachian opening. 



fr., frontal. 

 i.nar., internal nares. 



./•» J u 8'al. 



mx., maxilla. 



n., nasal. 



pal., palatine. 

 par., parietal. 

 pmx., premasilla. 

 po.f., postfrontal. 

 pr.f., prefrontal. 

 pt., pterygoid. 

 q., quadrate. 

 s.o.v., suborbital vacuity. 

 v., vomer. 



