Notes on the Osteology of Bison Antiquus 
Leidy. 
BY ALBAN STEWART. 
With Plate XVID. 
Bison antiquus was first made known by Leidy, who described 
fragmentary remains of a horn core and frontal bone found at Big 
Bone Lick, Kentucky. His description is as follows: ‘‘The speci- 
men is rather too small (a fragment) to determine positively whether 
or not it is a distinct species from Brson Jatifrons. It did not be- 
long to an aged individual, as the suture is still open between the 
frontal bone and that portion of the parietal which forms the upper 
boundry of the temporal fossa. It belongs to a species of Bison, 
as indicated by the advanced position of the horn-core, and resem- 
bles more the corresponding part in Bison priscus of Europe, as 
represented by Cuvier and others, than it does that of Bison lati- 
Jrons. The horn-core is more abruptly conoidal, and relatively 
more curved than in the ‘latter. It is not improbable, however, 
that the fragment may have belonged to the female of Bison Jati- 
Srons.” 
Since the above description was published additional remains 
have proved conclusively that Bison antiguus and Bison latifrons 
are two separate and distinct species. Below are given the cranial 
measurements of Azson antiquus, Bison latifrons, and the specimen 
inthe Kansas University Museum, from which the following de- 
scription is made: 
Bison Bison Kan. Univ. 
antiquus. latifrons. specimen. 
*Distance from mesial plane of occiput to tip of 
UUM ean Mi CME uit vi vihuchisiaulsic Ns blutwvirs, cum seltasaauae 300-470 457 
Distance between Vth Lo hawtoy anlylctobeck: Aner, Benet aie atte 680-920 1932 875 
Distance between bases of horn-cores..........+++ 2957-392 407-430 405 
Least width of forehead (between orbits and horn- 
GORGE HU aie Tce MMA ic DalyiELN Tire 4 ity Rana 290-330 380 346 
Rmeatea width Gf cecipitt, .j. ve cs leche cae ctse. 332 eee 270 
Circumference of horn-core at base,,........ 300-370 = 5 10-520 310 
Fronto-nasal suture to occipital crest, ........... BiB aiden es a’ 269 
Distance between SCS) OW ODES 740i caniniemPN aus Lab) Ua ns Vly 340 
"i *The measurements of Bison antiquus and Bison tatifrons were taken from The Amer- 
Can Bisons, Allen. 
(127) KAN. UNIV, QUAR., VOL. VI, NO. 8, JULY. 1897, SERIES’ A. 
