PLATE I. 



FIG. 1. Putorius nigripts, $ ad., Trego County, Kans. 

 (No. 4143, Merriam coll.) 



1. Upper side of skull, 

 la. Under side of skull. 

 Ife. Side view of skull. 



2. Putorius putorius, $ ad., Brunswick, Germany. 

 (No. 4661, Merriam coll.) 



2. Upper side of skull. 

 2a. Under side of skull 



