PLATE V 



Amphibia and Reptu.ta of Colorado 



Fig. 24. — Pilyopliis caleiiifer sayi. Bull Sn;ike (page 93). Fig. 25. — Pilyophis catenifer sayi. Bull Snake (page Q3). 



Fig. 26. — Pilyophis catenifer sayi. Bull Snake (page 93). 



Fig. 27. — Tropidonotus sipedon. Water Snake (page 97). 



