Mature Tadpoles. X 1 



A. Rana catesbeiana, third season (2 years 



old). 



B. Rana catesbeiana, first season ( 3 to 5 



months old). 



C. Rana catesbeiana, second season ( 1 year 



old). 



D. Rana pipiens. 



E. Rana clamata, second season (1 year old). 



F. Rana palnstris. 



G. Rana clamata, first season (3 to 6 months 



old). 



H. Hyla versicolor. 



I. Hyla pickeringii. 



J. Rana sylvatica. 



K. Bnfo lentiginosus americanus. 



^ 



e 



Relative Sizes of Transformed Examples. 

 a. Rana catesbeiana. e. Hyla versicolor. 



6. Rana clamata. 

 c. Rana palustris. 

 a. Rana pipiens. 



XI. 



y. Rana sylvatica. 



g. Hyla pickeringii. 



n, Bufo lentiginosus americanus. 



