EXPLANATION OF PLATE X. 



Represents the nearly complete shell of Emys wyomingensis, one-half the natural size. It was originally 

 referred to a species with the name of Emys Jeanesi. Specimen obtained from the vicinity 

 of Fort Bridger, during Professor Hayden's exploration of 1870. 



Fig. 1. View of the plastron. 



Fig. 2. View of the carapace. 



