KINOSTERNON PENNSYLVANICUM. 27 



Cistuda Carolina, &c.; but here the anatomical characters are greatly at variance,* 

 for in the Kinosternon pennsylvanicum, as seen above, it consists of three parts, 

 the central section fixed, the anterior and posterior moveable; while in the 

 genus Cistuda the sternum has but two valves, both equally moveable on the 

 same axis. 



Spix afterwards established the genus Kinosternon upon the characters given 

 above for a South American tortoise, under which the animal here described 

 ranges very well. 



* See the anatomical part of this work for a full description of the anatomy of this genus. 



