Plate V. 



Inner side of the left mandible of various reptiles. 

 Fig. i, Sphenodon. 

 Fig. 2, Chelydra. 

 Fig. 3, Alligator. 

 Fig. 4, Varanus. 

 Fig. 5, Cimoliasaurus snowii. 



art, articular; sur, surangular; ang, angular; c, coronoid; Pa, prearticular; 

 sp, splenial; d, dentary; mg, Meckel's groove. 



