MAP 36— RANGE OF THE NORTH AMERICAN PORCUPINES. 



This map must be considered diagrammatic and provisional. . 



Founded on records by Messrs." V. Bailey, O. Bangs, E. W. Nelson, J. A. Allen. G. S. Miller, D. G. Elliott, J. D. Figgins, R. 

 Farlane, A. P. Low, S. N. Rhoads, E. A. Preble, L. M. lurner, C. H. Merriara, W. H. Osgood, C. H. Townsend, Audubon and 

 man, and John Richardson. 



Mac- 

 Bach- 



The species are : 



Erethizon dorsalum (Linn.), with its 2 races. 



Ereihizon epixanthum Brandt, With 4 races. 



607 



