142 
Journal of the Mitchell Society [ December 
tailed Lizard, “ Red-headed Scorpion ” ( Eumeces quin - 
quehneatus.) 
5. Back crossbanded, or else throat and sides of belly dark 
blue. Scales very rough. Fence Lizard ( Sceloporus 
undulatus ) . 
Back not crossbanded, throat not dark blue, scales not 
very rough. 6. 
6. Back with lengthwise stripes Sand Swift ( Cnemido - 
phorus sexlineatus). 
Back unstriped. Color green, brown or blackish. Green 
Lizard, “ Chameleon ” ( Anolis carolinensis ) . 
7. A pit of hollow in the side of head between eye and 
nostril. Plates on underside of tail mostly not in pairs. 
Head much broader than the neck. The Rattlesnakes 
and their kin. (Family Crotalidae). 8. 
No pit on side of head between eye and nostril. Plates 
on under side of tail in pairs. Top of head covered 
with large plates. 11. 
8. Tail with a rattle. Top of head covered with large 
plates. Size small. Rattle small. Ground Rattlesnake 
( Sistrurus m iliarius ) . 
Tail with a rattle. Top of head covered with small 
scales. Size large, rattle large. 9. 
Tail without a rattle. Top of head covered with large 
plates. 10. 
9. Markings on back in form of diamond-shaped blotches. 
Diamond Rattlesnake ( Crotalus adamanteus ). 
Markings on back in form of dark, ragged-edged cross 
bands, or sometimes when the animal is very dark, wholly 
absent. Banded Rattlesnake ( Crotalus horridus). 
10. Top of head blackish brown, colors darker. * Cotton- 
mouth ( Ancistrodon piscivorus ) . 
* The Cottonmouth is continually confused with the large water snakes 
of the genus Natrix, which are perfectly harmless. 
