FEB., 1912. MAMMALS OF ILLINOIS AND WISCONSIN CORY. 



53 



County" (/. c., p. 257). Mr. W. E. Snyder has a male specimen in his 

 collection taken near Beaver Dam, Dodge County, Wisconsin, May 9, 



Virginia Opossum (Didelphis virginiana). 



1907, and he informs me an Opossum was killed near Columbus, Colum- 

 bia County, in the fall of 1905. 



Kennicott states that the Opossum was at one time not uncommon 

 in Cook County, Illinois (/. c., p. 580). Mr. John F. Ferry procured 

 two specimens alive in the fall of 1907, which were trapped on an 



