512 
THE OSTEOLOGY OF HYiENODON. 
pair of sternal ribs form large, prominent, and rounded tubercles j the anterior end 
projects far in advance of them and they are considerably in front of the joint 
between the presternuin and the first segment of the mesosternum. Among the 
recent Carnivora with which I have been able to compare this manubrium, that of 
the viverrine genus Merpestes shows the nearest resemblance to it. The segments 
of the mesosternum are short and heavy; somewhat contracted and of cylindrical 
shape in the middle, expanded, massive and of more quadrate shape at the ends. 
The number of these segments is not known at present. 
V. THE FOBE-LIMB. 
The scapula is remarkably small, not only in proportion to the size of the skull. 
Fig. l.—Hymmdon cruentus ; Left scapula, 
i natural size. 
F'ig. 2. — The same, seen in profile from the 
anterior side. 
but_ also relatively to the length of the vertebral column, and it has certain pecu- 
liarities wliidi do not occur in any of the recent Carnivora. In general shape the 
scapula of Hycenodon is most like that of the dogs ; its outlines are all curved and 
more or less sinuous, somewhat as in Plverra, which it also resembles in its relative 
an'ehrrr ' ° somewhat feline in shape, and forms 
than the anterior, and its hio-hest point i ^ 1!^^ descending more rapidly 
Slit-— 
and of 
