M'CHESNEY on DAKOTA MAMMALS. 

 Measurements of specimens. 



217 



Spermophilus tridecem-lineatus, {Mitch.) Aud. & Bach. 



The Striped Prairie Squirrel is very common on the Coteau; their holes 

 may be seen almost everywhere and in large numbers. This Squirrel 

 makes its appearance very early in the spring, as soon as the ground is 

 thawed sufficiently, and is seen daily until the approach of winter drives 

 it to its underground home. This Squirrel is a very polite animal, 

 always, before retiring to its home when disturbed, stopping at its hole, 

 standing on its hind legs for a moment, bowing, and then disappearing. 



The young are brought forth during the latter part of May and early 

 in June, and I believe there is but one litter annually, usually contain- 

 ing from four to eight. 



The following are the measurements of the specimens preserved: — 



* Naked part|)f sole only measured. 



HYSTEIOID^. 



Erethtzon dorsatum, Cuvier. 

 The Porcupine was a few years ago found on the Coteau, in the vicinity 



