CISTUDA CAROLINA. 37 



sometimes unspotted; chin and throat yellowish, rarely marked with a few 

 spots of dusky; hind legs and tail unspotted. 



"e Shell and sternum entirely very dark brown, without spots; plates deeply 

 marked with concentric striae." 



Though Fleming first separated the genus Cistuda from Emys, yet he united 

 in it several animals that have no affinity with each other, as Sternothaerus 

 odoratus, Kinosternon pennsylvanicum, &c. To Mr. Gray, a celebrated Herpe- 

 tologist of London, is due the merit of having restricted this genus within its 

 present limits. 



