f)81 U. S. P. R. K. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
the differences consist; in fact, some authors, at this late date, attempt to prove that the two 
species are mere varieties of each other. 1 
The American buffalo was formerly found throughout the entire eastern portion of the United 
States to the Atlantic ocean, and as far south as Florida. In the Hudson Bay country it did 
not pass east of the latitude of Bed river ; to the south it extended over the entire Mississippi 
valley, through Texas and into Mexico. 
At the present time its range is very different. The progress of civilization has crowded 
it off towards the west, until now it is never seen east of the Missouri, except in its northern 
portion. To the north, it is found in Minnesota and on Red river. The main range is, 
however, between the Upper Missouri and the Rocky Mountains, from Great Martin lake, lati¬ 
tude 64°, and the Saskatchewan, to northern Texas and New Mexico. In western Texas it 
is very seldom seen, nor do I know whether it is now found in Mexico at all. Of late years only, 
it has found its way through the Rocky Mountains to the upper plains of the Columbia. 
List of specimens. 
1 Jager, Wutemburgische naturwissenschaftliche Jahreshefle, III, 176-203. 
