American Reptiles 



and 2, Water Snakes (Masticophis\; 3, Horned Toad (Phrynosoma) ; 4, 5, n, 12, 13, 



American Toads ; 6, Kangaroo Lizard (Crotaphytus) ; 7, Gila Monster (Helo- 



derma\ ; 8, Chuckwalla ; 9, Harlequin Snake (Elaps} ; 10. Rattlesnake (Crotatus) 



