360 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.47. 



FOOD. 



There is a big salamander population, but the frogs and toads are 

 very scarce. As the garter-snakes do not eat the salamanders, and 

 as there are not enough frogs to support them, it proved instructive 

 to look into their food supply. This was found to consist almost 

 entirely of large slugs, of the genus Ariolimax. One specimen had 

 eaten a small rodent, and another had devoured two young of its 

 own species. 



This diet of slugs, eked out with an occasional indulgence in canni- 

 balism, is an interesting example of the straits a species may be 

 brought to when its normal food supply is not obtainable. 



