40 



STORY OF 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. 



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



