40 



STORY. OP THE AMPHIBIANS 



frogs. A Japanese frog makes a nest in the ground. 

 Another in Brazil makes circular nests in shallow 

 water, smoothing and shaping rings or atolls of mud, 

 and laying its eggs in these cup-like depressions. 



Fig. 22. — Obstetric frog (Alytes ohstetricans), with strings of eggs. 



