On the Classification of the Reptilia. 



265 



Fig. 2. — Skeleton of the Hind Foot of : — A, Chelydra serpentina, L. ; B, Sauranodon 

 (Saphceosaitrus) incisivus, Jourdan ; C, Iguana tuberculata, Laur. ; D, Ascalobotes 

 fascicularis ; E, Embryo of same species ; F, Sphenodon punctatus, Gray ; G, Caiman 

 sclerops, Schn. D and E copied from Sewertzoff (31), B from Lortet (21), A, C, 

 F, G, from photographs of specimens in the Oxford University Museum. 



