Polyphemus) y leading a solitary life. This frog is 

 especially fond of toads as an article of diet. Ow- 

 ing to the extraordinary development of its jaws, it 

 can accomodate toads of surprisingly large size. 

 30. Rana catesbiana Shaw. BULL-FROG. 



These huge frogs are found throughout the 

 United States east of the Rocky Mountains. They 

 are usually less common than most olher frogs, not 

 only owing to their numerous natural enemies, but 

 also to the fact that they are much desired as food 

 by man. In the south they are secured by "gig- 

 ging" or spearing. This is done at night; one of 

 the hunters holds the frog immobile by shining a 

 strong light, usually an electric torch, in its eye, 

 while another member of the party impales the 

 frog upon the "gig" or barbed spear. 



The bullfrog remains in the larval stage for a 

 year, and the tadpoles reach a very large size. 

 31. Rana clamitans Latreille. GREEN-FROG. 



A handsome species, which shows a preference 

 for springs and brooks. The cry of the Green Frog 

 is peculiar and not unpleasing, and can be varie- 

 gated from a scream suggesting a frightened bird 

 to a low, musical "k-tun-n-ng", this last uttered 

 when the frog jumps into water. Common through- 

 out Eastern North America, including Canada and 

 Florida. 

 32. Rana pipiens Schreber. LEOPARD FROG. 



This is the most common frog of the United 

 States east of the Sierra Nevada Mountains. It of- 



