352 
ARTIODACTYLA. 
A tliird horn from the left side presents the characters of the last, hut 
there is an indication of the rough girdle near its base, but no cingulum. 
Diameter below expansion for inferior antler 0“.015; length from base to 
first antler 0“.072; distance between bases of antlers O^.OIS. The distal 
extremity of one of the antlers has been broken olf and reunited, the frac¬ 
tured ends overlapping and coossifying without the formation of a burr. 
The adhesion of this broken end would indicate the existence of integu¬ 
ment, which maintained it in position so far as to prevent its loss. A penulti¬ 
mate molar accompanies this horn, which may belong to the same animal. 
It is prismatic, compressed, and without accessory basal columns. The 
two lakes are entirely surrounded by the dentine, and the internal crescents 
are elevated and acuminate above the inner. Diameters of grinding sur¬ 
face : antero-posterior 0“.012 ; transverse 0“.005. 
A fourth specimen is remarkable for the distance between the first and 
second antlers; basal part of beam not preserved. Diameter of beam as 
before 0"’.015 ; distance between bases of antlers 0™.033. 
A fifth consists of the basal part of a horn, remarkable for its size and 
for the distinct traces of a burr. A sixth is of normal size, and exhibits the 
rough band surrounding the base obliquely, descending outward and back¬ 
ward. In this specimen, it resembles a reunited fracture, although no burr 
is present. Diameter of the fifth an inch from base 0™.017 ; diameter of 
sixth O’".015. 
In a seventh specimen, without basal portion, the beam is 0’".014 in 
diameter below the first antler, and the two antlers are 0’".013 apart at their 
bases. The horns of the other individuals present nothing remarkable. 
Thus of the horns in which the basal portion is preserved, one presents 
a burr, three exhibit traces of the burr, and one is entirely smooth. No 
mention is made of indications of burr in Dr. Leidy’s description. 
The mandibles already alluded to present the dentition of both sides, 
excepting the first premolar, which is broken off. The ramus increases in 
depth posteriorly in accordance with the successive increase in size of the 
teeth. It is compressed, and with very little convexity on the outer side. 
The portion anterior to the second premolar is both long and slender, with 
a less vertical diameter than in the corresponding portion of D. necahis. It 
