ARTIODACTYLA. 
351 
possessing two antlers instead of one, of which the first is given off at a 
point much farther from the base than in that species. 
The dense layer of the tissue of the horns is very thick, leaving a nar¬ 
row axis of coarse cells, without columnar structure. The surface is smooth, 
and with very few and shallow grooves. The beam near the base is curved 
a little inward, and is semicircular in section; the outer face being slightly 
concave, the inner very convex. The base is situated a short distance 
within the free superciliary border. The beam becomes more cylindric, 
and then, expanding in a fore and aft direction, gives off an antler at right 
angles, toward the front, nearly parallel to the cranial axis. At a distance 
little over half the elevation of the first antler, the beam gives off a second 
in a plane transverse to the axis of the skull. The terminal portion of the 
beam is cylindric, curved, and acute at the apex. 
There is no emargination of the superciliary border, but a foramen 
pierces the frontal bone in front of the inner margin of the horn, as in other 
Buminantia^ issuing in a marked depression of the surface. 
In a specimen in which a considerable portion of the frontal bone is 
preserved, a rough and tubercular burr surrounds the proximal part of the 
beam, standing on the interior side at a point about an inch above the base, 
and descending obliquely to the anterior and outer side. When broken 
away, an oblique, irregular bone of rough surface remains, which gives the 
appearance of a reunited fracture. A section of the beam above this point 
is an equilateral spherical triangle, and there is a very shallow groove on 
the external side. Diameter of beam before first bifurcation 0".014; 
length of second antler on curve 0“.105. 
A second specimen with the antlers broken off, is more strongly grooved 
on the outer side, and on the posterior face also. The beam is shorter, and 
the antlers are given off nearer together than in other specimens. There is 
no indication of burr or fracture at the base. Associated with it is a frag¬ 
ment of the horn of the opposite side, which includes the base of the 
second antler. This is broken off nearly an inch above the base, and is sur¬ 
rounded just below the stump by a burr of osseous tuberosities. Diameter 
of beam (first noticed) below first antler 0“.014; length of beam to first 
antler 0'“.046; length from first to second antler G“.008. 
