PLATE V. 



Pig. Page 



1. Steneosaurus leedsi, Andrews ; skull, from below : one-fourth nat. size. 



[Type specimen, R. 3320.] 118 



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



[Type specimen, R. 3320.] 118 



3. Ditto; skull, occipital surface: one-fourth nat. size. 



[Type specimen, R, 3320.] 118 



4. Ditto ; mandible, from above : one-fourth nat. size. 



[Type specimen, R. 3320.] 118 



5, 5 a. Ditto ; tooth, from behind (5) and inner face (5 a) : one-and-a-half times 



nat. size. [R. 3806.] 119 



6. Ditto ; scute probably from neck: one-third nat. size. [R. 3806.] 119 



7,8. Ditto; scutes probably from tail : one-third nat. size. [R. 3806.] 119 



9, 10. Ditto; scutes from back: one-third nat. size. [R. 3806.] 119 



aivj. 



angular. 



nar. 



external nares. 





art. 



articular. 



pal. 



palatine. 





hoc, 



basioceipital. 



par. 



parietal. 





car., 



carotid foramen. 



pm.v. 



premaxilla. 





cor., 



coronoid. 



PO-f; 



postfrontal. 





d., 



dentary. 



pr.f., 



prefrontal. 





fac, 



foramen for facial nerve (VII.). 



pt., 



pterygoid. 





f.m., 



foramen magnum. 



9-> 



quadrate. 





/'••. 



frontal. 



1-j; 



quadrato-jugal. 





hi/., 



hypoglossal foramen. 



s.ang., 



surangular. 





i.nar., 



internal nares. 



soc, 



supraoccipital. 





1. 



lachrymal. 



spl., 



splenial. 





l.p. 



lateral processes of basioceipital. 



sq., 



squamosal. 





mx. 



maxilla. 



t.p., 



transpalatine. 





n., 



nasal. 



vag., 



foramen for vagus 



nerve (X.) 



