﻿LETTER OF TRANSMITTAL. 



United States Department of Agriculture, 



Division of OrnithologtY and Mam^ialogtY, 



Tfashington, I). C, 2[ay 12, 1896. 

 Sir : I have the honor to transniit herewith, and recommend for pub- 

 lication, the manuscript of No. 12 of North American Fauna, treating 

 of the Genera and Subgenera of Voles and Lemmings, and comprising 

 results of investigations carried on in the Division of Ornithology and 

 Mammalogy by Gerrit S. Miller, jr. 

 Eespectfully, 



C. Hart Merriam, 



Chief of Dii'ision. 



Dr. Oh AS. W. Dabney, Jr., 



Acting Secretary of Agriculture, 



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