22 THE AMERICAN MIDLAND NATURALIST 



35. Plastron small and covering only a small portion of the ventral fleshy 



parts 36. 



Plastron nearly or completely covering the ventral fleshy parts 37. 



36. Tail long and covered above with a median row of large tubercles. Marginal 



scutes 25. — Snapping Turtle, Chel^dra serpentina. 

 Tail short and without a median row of tubercles. Marginal scutes usually 

 23. — Musk Turtle, Siernotherus odoratus. 



37. Plastron hinged and movable 38. 



Plastron rigid and immovable 39. 



38. Carapace long and depressed; upper jaw notched in front. — BlandINg's 



Turtle, Em^s blandingii* 

 Carapace short and high; forward part of upper jaw hook-like and projected 

 downward. — Box Turtle, Terrapene Carolina.'^ 



39. A prominent red band extending backward from the eye on either side of 



the head. — CUMBERLAND Terrapin, Pseudemys scripla iroosiii. 

 No prominent red band on sides of head 40. 



40. Upper jaw notched in front 41. 



Upper jaw not notched in front. — Map Turtle, Craplemys geographica. 



41. A tooth-like projection at either side of the notch; carapace not spotted with 



yellow. — Painted Turtle, Chrysemys bellii marginala. 

 No tooth-like projections at sides of notch; carapace marked with bright 

 yellow dots. — SPOTTED Turtle, Clemmys guliala. 



Discussion of Species 

 Sceloporus undulatui (Latreille) 

 Swift; Fence Lizard; Pine Lizard 



Description. — A small lizard attaining a length of about 7 inches. Largest 

 perfect** Ohio specimen ( 9 ), 7i/8 inches in length; smallest newly hatched 

 young, 2i/g inches. Head small but somewhat wider than neck; eye small. 

 Limbs well developed; five toes and claws on each foot. Body moderately 

 slender in juveniles, stouter in adults. Tail long and slender and from LI 5 

 to L50 times the length from snout to vent. 



Scales around middle of body 40 to 51, average 45. Dorsal scales from 

 parietal to a point directly above the anus 35 to 48, average 42.5. Dorsal 

 scales keeled; ventral scales smooth. Upper labials 5, occasionally 6, rarely 

 4; lower labials 6, occasionally 7, rarely 5. Supraoculars 5, commonly 6, rarely 

 7 or 4. Femoral pores most commonly 13, 14 or 15 (18 on one side in one 

 specimen), average 14.4. 



Ground color variable but usually some shade of grey. Individuals capable 

 of changing their colors to a certain degree; they may be light grey at one time 



* In very young specimens the hinge is not readily apparent. Juvenile Blanding's 

 turtles may be distinguished from other juvenile hard-shelled Ohio turtles by 

 the uniform yellow throat, and box turtles may be known by the hook-like 

 downward projection of the forward part of the upper jaw. 



** This species, in common with the other lizards inhabiting Ohio, loses its tail if 

 seized by that appendage. The tail is regenerated in time but the new one 

 is not as long or as perfect as the original. 



