U. S. B. F.— Dec. 888. 



PLATE XV. 



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FIGS. 1 TO 3.— FORM OF EGG MASSES. 



Egg mass of the swamp cricket frog, several such bunches laid by one female ; 

 2, egg mass oi ereen frog, a surface film among vegetation ; 3, egg nnasses ot 

 the pickerel frog'! globular mass, frequently in tiers. (After Wright, Carnegie 

 Publ. No. 197.) 



