60 



HERPETOLOGY OF MICHIGAN. 



and with deep as well as shallow water. It is a powerful 

 swimmer, due to the fact that the toes are fullv webbed and 

 the hind limbs are long and well developed. The food consists of 

 fish, young turtles, young water birds, frogs, small snakes and in- 

 sects. 



I L L I N IS 



Fig. 20. Distribution of Rana catesheana. 

 Horizontal ruling, specimens examined; vertical ruling, reports only. 



The bullfrog is solitary in habit except during the breeding 

 season and even then it sings alone and not in chorus. The song- 

 consists of a deep bass note that resembles the roaring of a bull; 

 from this it gets the common name, the bullfrog. It is late in com- 

 ing from its hibernation quarters, the eggs being laid in May or 

 early June. ^letamorpliosis does not take place until the second 



