6 THE AMERICAN BISONS. 
Ursus, Cervus, Megalonyx, and Mylodon” ; and also a humerus, tibia, atlas, and 
metatarsus, found in excavating the Brunswick Canal, in Georgia. A frag- 
ment of a jaw, with the teeth very much worn, belonging to the same col- 
lection, was subsequently identified as belonging to an extinct bison, though 
in the mean time wrongly referred by Harlan and Owen to other genera. 
In 1852 Dr. Leidy * also described the greater part of a right horn-core, hav- 
ing a small fragment of the frontal bone attached, found at Big-bone Lick, 
Kentucky, which he “with some hesitation” described as belonging to a new 
species (Bison antiquus Leidy), but which he later regarded as the female of 
the larger form (Bison latifrons). 
In 1854 the fossil bison remains from the ice-cliffs of Eschscholtz Bay col- 
lected by Captain Beechey, together with others collected later by Captain 
Kellet, were described by Sir John Richardson,* who believed them to repre- 
sent two species. One of these he regarded as new (Bison crasstcornis Rich- 
ardson), while he regarded the other as doubtfully identical with the fossil 
bison of Europe (Bison priscus auct.). Altogether the fossil bison remains 
from this locality included portions of several skulls, several additional horn- 
cores, most of the bones of the limbs, and the greater part of the vertebra. 
None of-the skulls, however, embraced the facial portions of the cranium. 
In 1860 Dr. Leidy ¢ described and figured a second premolar tooth from . 
the post-pliocene formation of the Ashley River, South Carolina, which he 
believed to be referable to B. latifrons. In 1867 the same writer § described 
a skull from Pilarcitos Valley, California, and also several teeth from the 
same State, which he redescribed and figured in 1873.|| He also described 
and figured at the same time a molar tooth found at Pittston, on the Sus- 
quehanna River, in Luzerne County, Pennsylvania, and another molar from 
a crevice in the lead-bearing rocks of Jo Daviess County, Illinois, both of 
which he also referred, though somewhat doubtfully, to the same species. 
It thus appears that the hitherto described remains of extinct bisons 
known from the United States consist of three or four very imperfect 
skulls, (none of them embracing the very characteristic facial portions,) an 
atlas, a tibia and humerus and a few detached molar teeth. The remains 
* Proc. Acad. Nat. Sci. Phila., 1852, 117. 
+ Zodlozy of the Voyage of the Herald. 
{ Holmes’s Post-Pliocene Fossils of South Carolina, p. 109, pl. xxii. figs. 15, 16, 1860. 
§ Proc. Acad. Nat. Sci. Phila., 1867, p. 85. 
| Contrib. to Extinct Vert. Faun. Western Territories, pp. 253, 318, pl. xxviii, figs. 4-8. 
