+1 



?3 



MONOGRAPHS OF THE 

 AMERICAN SOCIETY OF MAMMALOGISTS 



NUMBER 1 



ANATOMY 

 of the WOOD RAT 



COMPARATIVE ANATOMY OF THE 



SUBGENERA OF THE AMERICAN 



WOOD RAT (GENUS NEOTOMA) 



BY 

 A. BRAZIER HOWELL 



U, S. Biological Survey 



BALTIMORE 



THE WILLIAMS & WILKINS COMPANY 



1926 



