AMPHIBIANS. 



55 



ILLINOIS 



CHICAGO 



Fig. 17. Distribution of Rana clamitans. 

 Horizontal ruling, specimens examined; vertical ruling, reports only 



KA.NA CANTABKIGENSrS Baircl. 



AVOOD FROG. 



(Pi. IV a.) 



Descriptioit: Body slender, uiuzzle ])oiiited. rpiiei- surface 

 slightly gTaniilated ; posterior surface of feiiuir graimlar. Lateral 

 folds conspicuous. Toes long and slender, webbed almost to the 

 tip. Inner sole tubercle present. A'onierine teeth in two patches 

 between or behind internal nares. 



Ground color varies from light to reddish and dark brown. Tri- 



