1895.] Geology and Paleontology. 575 
is slightly heavier, the symphysis is broader and the flanges are less 
accentuated. There is a low rough tuberosity on the inner superior 
border of the ramus opposite the second rig similar to that men- 
tioned by Cope as occurring in H. oreodont 
Dentition: In the type specimen the crowns of all the teeth are 
broken off but the mugs show the dental formula to be that character- 
istic of the genus, I, $ C. + M. 3. The superior 
than is indicated by the recorded measurements of D. felina. In speo- 
imen 10933 from the Lower Oreodon Beds, the crowns of the third and 
fourth inferior premolars are preserved. They are higher, the para- 
and meta-conids are less trenchant and the teeth are set more nearly 
perpendicularly in the jaw than those of the other Nimravide. There 
are no indications of a paraconid on the third premolar. 
The fore-limb: The scapula presents a large glenoid cavity to 
correspond with the large articular surface of the head of the humerus. 
The neck is stout, the coracoid process is short and heavy, the spine is 
thick and shows the base of the metacromion. The head of the 
humerus is large and the greater tuberosity rises above it but slightly. 
The lesser tuberosity is low and rugose. The bicipital groove is broad 
and shallow, contrasted with that of D. felina, which is narrow and deep. 
The ulna and radius present no special characteristics excepting their 
relatively larger proportions. The manus of D. felina has not been 
described but from a specimen at hand it can be seen that it was small 
and narrow, thus agreeing in character with the pes which is already 
well known.2 The manus of D. fortis agrees with these characters but 
the scapho lunar differs in that the tubercle is set off by a distinct 
roove, 
The hind limbs are very similar in their markings to those of D. 
felina but on the femur the line from the third trochanter to the second 
is incomplete and the inter-osseous line of the tibia is very sharp 
and well marked. These characters are presentin both specimens and 
are probably not due to individual variation. The knee j joint seems 
particularly large, since the shafts of the limb bones possess something 
of the slenderness characteristic of those of D. felina. While the astra- 
gulus and calcaneum are heavy, the length of the fourth metapodial 
shows the pes to have been long. The unguals have incipient hoods. 
In the type specimen there are preserved the lumbar vertebra and 
the sacrum. In the other specimen twenty-nine vertebræ are present, 
all of which are more or less mutilated. These indicate an animal of 
? Notes on the Osteology and Systematic position of Dinictis felina, W. B. Scott. 
Proceedings of the Academy of Natural Sciences, Philadelphia, July 30, 1889. 
