Plate II. Fig. 1. Common Water Snake, Natrix sipedon sipedon. Ann Arbor, 

 Michigan. Length about 30 inches. Photo by Wm. M. Clay. Fig. 2. Island Water 

 Snake, Nalrix sipedon insularum. Put-in-Bay, Ottawa Ccun'y, June 1, 1935. Length 

 about 30 inches. Photo by Wm. M. Clay. Fig. 3. Common Garter Snake, Thamnophis 

 sirlalis sirtalis. Length about 24 inches. Photo by H. K. Gloyd. 



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