356 
ARTIODACTYLA. 
acter; tlie burr is lowest on the intero-posterior aspect, being highest out¬ 
side, contrary to the obliquity in the fourth specimen. This burr is quite 
prominent, and its undivided margin is turned downward. Where a por¬ 
tion is broken away, the surface is quite rough. Length of beam O^.ObB; 
diameter above base 0“.013. This and the last specimens are the Cervus 
ivarrenii of Leidy. The other specimens are broken off below the bifurca¬ 
tion; none of them display the burr, nor a rough annular scar. 
A mandibular ramus, of proportions identical with those of B. necatas^ 
presents some peculiarities in the dentition, which lead me to question its 
pertinence to this species. The molars have the stout form, as already 
described, but present some basal intercolumnar tubercles, which are like 
those of the B. gemmifer. The molars are entirely prismatic, and the last 
one is without the basal tubercles, as I ascertained by removing it from the 
jaw. The tubercles are present between the columns of the first and second 
true molars; in the first, it is so fully developed as to enter into the com¬ 
position of the crown. It here forms, on wearing, a loop of the antero- 
external.enamel border of the posterior column. The premolars preserved 
(Nos. 3 and 4) present the prominent three folds of the inner side. 
Measier ements. 
M. 
Length of the six posterior molars 
Length of the true molars.... 
Length of the first true molar. 
Width of the same.. 
Length of the last true molar. 
0. 050 
0. 036 
0. 009 
0. 006 
0. 016 
On the dentition of this individual I originally discriminated the B. 
ramosus, describing also portions of the B. furcatus. Should it prove to 
belong to a distinct species, the former name may be preserved for it. 
Dicrocerus teres, Cope. 
Plate Ixxxi, fig. 7; Ixxxii, fig. 6. 
Dicrocerus tcres^ Cope, Proc. Acad. Phila., 1875, p. 257. 
Cosoryx teres^ Cope, 1. c., 1874, p. 149; Ann. Eept. Chief of Engineers, 1874, ii, p. 605. 
This Ruminant is known from the iqiper portion of the cranium support¬ 
ing the broken horns of a single individual. This indicates a species of per¬ 
haps double the proportions of the preceding ones, equaling, in the size of the 
corresponding parts, the Virginia Deer. In various respects, it differs from 
