FEB., 1912. MAMMALS oF ILLINOIS aND Wisconsin — Cory. 53 
County” (/. ¢., 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 (J. c., p. 580). Mr. John F. Ferry procured 
two specimens alive in the fall of 1907, which were trapped on an 
