149 



first and second vertebral scute areas are wider and the third one longer. 

 The forms of the plates and scute areas indicated are nearly the same in both 

 specimens. 



The plastron is slightly convex in both directions, and its extremities for 

 half the length are more parallel at the lateral borders than in the fourth- 

 described specimen. The axillary and inguinal scute areas are longer and 

 narrower than in the latter, and somewhat modified in form. The length of 

 the plastron in the median line is 11 inches. Other measurements in detail 

 are given in the annexed table under the head of specimen 14. 



Comparative measurements of the specimens referred to Emys loyomingen- 

 sis are as follows : 



