6 Unk'crsity of Michigan 



since they are not nocturnal, feed in the early morning. The 

 stomach contents of four individuals are tabulated below. 



Breeding Habits' Unfortunately the breeding season had 

 passed at the time the investigations were made, but Professor 

 LaRue obtained his specimens in March and made notes on 

 the breeding habits, which he has kindly placed at our dis- 

 posal. During the latter part of March, 1910, the frogs were 

 found in numbers about the ponds at night, and many large 

 masses of eggs were seen. One captured female laid her eggs 

 in the collecting bag. The song is described as a loud trill, 

 hoarser than that of the leopard frog and pitched somewhat 

 higher than that of Rana catesbiana. We were not successful 

 in finding the tadpoles in May, altho the ponds were searched 

 for them. Professor LaRue found the frogs in the mammal 

 burrows along the shores of the ponds, as well as in crayfish 

 holes, but it is probable that they were only temporarily occupy- 

 ing the former during the spawning season for we were unable 

 to discover any mammal burrows, either in the vicinity of ponds 

 or elsewhere, inhabited by frogs. 



General Notes: Altho very agile in seeking the conceal- 

 ment of their burrows when alarmed, these frogs are in many 

 ways rather sluggish and appear stupid in their actions. As 

 stated, they usually do not retreat to the bottom of the hole 

 when one is digging them out, and they do not try to escape 



