358 
ARTIODAOTYLA. 
of the parts of a single skeleton, and the horn, symphysis, and teeth coin¬ 
cide with the type of Dlcrocerus, and differ from that of any other genus of 
Ruminants which I found in the same formation. 
The horn fragment measures four and a half inches in length, and is 
rather slender, and gives no evidence of branching. It is probably a por¬ 
tion of a branch, or of the beam above the bifurcation, since its diameter 
is less than that of the beam proper of the D. teres. It is slightly curved 
in one direction, and its section at one extremity is that of an isosceles 
spherical triangle. At the distal extremity, the form is modified, so that the 
section is nearly round. The' dense layer is thickest at the base, while the 
distal portion is almost entirely occupied by coarse cells. The external 
surface is smooth. 
The distal part of the mandible is quite narrow and produced. The 
symphysis is not coossified, is rather strong, and the inferior face is strongly 
convex. The canine teeth are in the uninterrupted series with the incisors, 
and, judging from their basal portions, have the same size and direction. 
There is no indication of first premolar in the diastematic border for an 
inch (as far as preserved) behind the canine, nor for half an inch farther on 
the opposite side, where the inner lialf of that edge is preserved. The teeth 
preserved are fragmentary, and belong to different positions. They show 
that the premolars were compressed, as in the other species, and that the 
true molars had no intercolumnar basal tubercles. The fragments of the 
latter display the size of the species; the long diameter of an external cres¬ 
cent being 0“.014, giving for the antero-posterior diameter of the last molar 
0“.038. The enamel is nearly smooth. 
Th-e ribs are stout, and one of them exhibits a large tubercular facet. 
The pieces of the pelvis preserved are both acetabula and the symphyses 
pubis and ischii. The former are a little larger than those of an adult 
female Cervus eJaplms, but the walls are a good deal stouter. The symphy- 
seal portions differ from those of C. elaphus in superficial extent about as do 
the acetabula, but are much more robust, being atleast three times as thick, 
and thoroughly coossified. Both pubes and ischia present a median keel-like 
tuberosity downward. The ischia diverge outward and backward, as in 
other Ruminants. 
