TAB. XXIV. 

 Emys testudiniformis, nat. size. 



Fig. 



1 . Nuchal plate. 



2. Upper surface of the third neural plate. 



3. Under surface of ditto. 



4. Upper surface of the fifth neural plate. 



5. A posterior marginal plate. 



6. Front view of a mutilated cuirass in which the carapace has been slightly 



depressed ; the natural curve, across the middle, is indicated by the 

 outline. 



