COMPARISON WITH PUTORIUS LUTREOLA. 



169 



series. A single specimen, marked ' Brookhaven, Miss.^ and 

 another marked ^Tuscaloosa, Ala.', however, have a length 

 respectively of 2.60 and 2.80, the former equaling the largest 

 New York specimens, and the latter nearly equaling the aver- 

 age size of the males of the northern series, while a single 

 male skull from Fort Randall, D. T., 2.90 in length, is the sec- 

 ond in size of the whole series; one Fort Yukon specimen 

 only being larger ! Other specimens from the Upper Missouri 

 region, however, are much smaller, as are other specimens 

 from Prairie Mer Rouge, La., indicating that the specimens 

 above mentioned are much above the average for their re- 

 spective localities. 



" Measurements of thirty-seven skulls of Putorius vison. 



Comparison with the European Mink, 



I have only been able to compa^^e my series of American 



Minks with one European specimen, which, being mounted, 



does not permit examination of the teeth. But as we have 



seen that the curious difference in the character of the molar 



