176 THE GEOGRAPHY OF MAMMALS 



List of the Principal Authorities referred to 

 in Chapter VI. 



(1) Allen, J. A. — " The Geographical Distribution of North 

 American Mammals." Bull. Amer. Mus. Nat. Hist., iv., p. 199. 1892. 



(2) Merriam, C. H. — " The Geographical Distribution of Life in 

 North America, with Special Eeference to the Mammalia." Proc. Biol. 

 Soc. Washington, vii., p. 1. 1892. 



(3) Zittel, Karl von. — " The Geographical Development, Descent, 

 and Distribution of the Mammalia." Gaol. Mag., 3rd ser., x., p. 401. 

 1893. (Translated from the S. B. k. Bayer. Akad. Wiss., xxiii., p. 137. 

 1893). 



