U. S. B. F.— Doc. 888. 



Plate XXII. 



FIGS. 1 TO 16. — TRANSFORMATION SIZES, NATURAL SIZES. 



1 Bullfrog- 2, mink frog; 3, green frog; 4, western frog; 5, southern leopard frog; 6, leopard 

 'frog- 7 pickerel frog; 8, wood frog; 9, narrow-mouthed toad; 10, common toad; 11, spadefoot 

 toad'- I'a Pacific tree frog; 13, swamp-cricket frog; 14, cricket frog; 15, tree toad; 16, peeper. 

 (Photos 'of 2, 4, 5, 9, 11, 12, 13, 14 from spirit specimens.) 



