TURTLES. 365 



genus is exclusively terrestrial in its habits. The size of the 

 different species of this group varies from fifteen to four 

 inches in length, the largest species being aquatic. In this 

 family the "terrapenes," so much esteemed as articles of 

 food and luxury, are embraced. Inoffensive and harmless, 

 they do not capture their prey, and only show combative 

 elements when attacked. They live on animal and vegetable 

 food, the terrestrial species feeding on vegetables alone. 

 " They lay their eggs upon dry land like all other turtles, 

 the terrestrial laying the fewest eggs." 



PTYCHEMYS Rugosus. Found at eastern base of moun- 

 tain. 



Sub-Family of NECTEMYDOID^E. 



GRAPTEMYS Geographica, (Ag.) Not common on the 

 mountain, but is found along its eastern base, and is said to 

 be " common from Pennsylvania and New York to Michigan, 

 Tennessee, and- Arkansas." 



CHRYSEMYS Picta, (Gray.) This is the old Emys picta, 

 painted terrapene. It is described as a common species in 

 every part of the geographic fauna of which its range is the 

 limit. It is not common on the Alleghany, but very abund- 

 ant near it. It is a beautiful turtle, and generally attracts 

 attention by its ornamental box. 



Sub-Family of CLEMMYDOID^E. 



NANEMYS Guttata, (Ag.) This species is represented to 

 occur in New England, New York, Pennsylvania, and North 

 Carolina. Not abundant on the Alleghany. 



CALEMYS Muhlenbergii. Muhlenberg's terrapene is said 

 to be " entirely limited to New Jersey and the eastern 

 part of Pennsylvania." (?) 



Sub-Family of CISTUDININ^E. 



CISTUDO Yirginea. North American box-turtle. This 

 species of box-turtle is found on the highest parts of the 

 mountain, and is as common on the lower part of the range 



31* 



