Plate \. 



(About natural size.) 



Fig 1. Cynomys ludovicicinus ludovicianus (Ord). c? ad. Glendive, Montana, (No. 



191411, U. S. Nat. Mus., Merriam collection, original number, 4454.) 

 Fig. 2. Cynomys ludovicianus arizonensis Mesims. <? ad. San Pedro River, Arizona. 



(No. 35873, U. S. Nat. Mus.) 

 Fig. 3. Cynomys niexicanus Merriam. ad. La Ventura, Coahuila, Mexico. No. 



79550, U. S. Nat. Mus., Biological Survey collection.) 

 Fig. 4. Cynomys parvidens Allen. ? ad. Buckskin Valley, Utah. (No. 158994, 



U. S. Nat. Mus., Biological Survey collection.) 

 Fig. 5. Cynomys gunnisoni gunnisoni (Baird). c? ad. Saguache, Colorado, (No. 



176695, U. S. Nat. Mus., Biological Survey collection.) 

 Fig. 6. Cynomys gunnisoni zuniensis Hollister. ad. Wingate, New Mexico. 



(Type, No, 137555, U. S. Nat. Mus., Biological Suvery collection.) 



