166 



MONOGRAPHS OF .NORTH AMERICAN RODENTIA. 



[The peculiarities of pelage of a part of these Illinois and Wisconsin 

 specimens, constituting the variety long/pilis, arc discussed elsewhere.] 



Before taking up the intricate questions that western specimens present, 

 and to complete our review of eastern examples, we continue with & fourth 

 table, comprising all the resl of the dry specimens that have fallen under our 

 observation from the United States east of the Mississippi. 



TaiilkXLII. — List of specimens {additional to thoscof Tables XXXIX. XI., mid XLT)of Auvicola riparius 

 examined dry from tin- United States east of the Mississippi, nitli mcasuremntts of many. 



