﻿PLATE I. 



Fig. 1. Putorius nigripts, $ ad., Trego County, Kaus. 

 (Xo. 4143, Merriam coll.) 



1. Upper side of skull, 

 la. Under side of skull. 

 lb. Side view of skull. 



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

 (Xo. 4661, Merriani coll.) 



2. Upper side of skull. 

 2a. Under side of skull 



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