TAB. V. 

 Chelone longiceps. 



Fig. 



1 . Upper view of the carapace, two thirds of the natural size. 



ch. Nuchal plates. 

 s\ — 510. Neural plates. 

 ph — ^/s. Costal plates. 

 v\ — vA. Vertebral scutes. 



2. Under view of the plastron of another specimen, two thirds nat. size. 



s. Entosternal. 

 es. Episternals. 

 hs. Hyosternals. 

 ps. Hyposternals. 

 xs. Xiphisternals. 

 63. The ischium. 



