1920] Turtles of North Carolina 71 



35. Keels of the vertebrals not knobbed. (18) Diamond-Back 

 Terrapin {Malaclemmiis cenfrata) and subspecies. 



36. Keel of shell even, not tuberculate. A triangular yellow spot 

 behind each eye. Map Terrapin {Graptem.ijs geographicus), Virginia. 



36. Keels of vertebrals rising into knobs or tubercles on each 

 plate, an L-shaped yellow spot behind eye. Lesueur's Terrapin 

 {Graptemys pseudo-geographicus), Virginia. 



37. Shell with tubercles in front in adult. See 38, 



37. Shell without tubercles in front in adult. Brown Soft- 

 Shelled Turtle {Amy da mutica), Ohio. 



38. Pale lines on top of head united just in front of eyes. 

 Southern Soft-Shelled Turtle (Amyda ferox), South Carolina. 



38. Pale lines on top of head united near tip of snout. Spiny 

 Soft-Shelled Turtle (Amyda spinifera), Ohio. 



Ealeigh, N. C. 



