154 BULLETIN OF THE 
tide. The femur is rather long and slender, and has a distinct third trochanter, 
which is also to be seen in Cryptoprocta, Dinictis, Proelurus, and Amphicyon, 
and is probably an inheritance from their creodont ancestry. 
ance the femur of Hoplophoneus closely resembles 
that of Prowlurus as figured by Filhol.* The tibia 
is stout, laterally compressed, and curved forward ; 
the distal end is broad, and not very deeply grooved, 
The fibula has a slen- 
The tarsus is 
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and with heavy malleolus. 
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the cats. 
of Hoplophoneus, viewed 
from in front. 18 inches high and about 33 inches long, exclusive 
of the tail. 
Hoplophoneus occidentalis, Leidy. This is a larger species, equalling 
the puma in size, and with a more robust skeleton. 
ARTIODACTYLA. 
OREODONTIDA. 
Oreodon Culbertsoni, Leidy. This very common and well-known species 
is represented by numerous skulls and parts of the skeleton. 
Oreodon gracilis, Leidy. Little has hitherto been known as to the 
* Soc. Sc. Ph. et Nat. Tours, 1880, Pl. V. fig. 3. 
der shaft and expanded distal end. 
feline, but with some differences ; the astragalus is 
more flattened than in the true cats, and the calea- 
neum has the arctoid character of a conical process 
on the outer side near the distal end (found also in 
Amphicyon, Proelurus, and Dinictis). 
tarsals, five in number, are slender and weak ; the 
three external ones are strongly interlocked, as in 
Restoration (see Plate I.).— This animal had a 
very striking appearance, with its short rounded head 
and exceedingly long and trenchant canine tusks ; 
the neck is long, the trunk, especially the lumbar 
region, is short as compared with Cryptoprocta ; the 
tail is very long, as in nearly all of the early flesh- 
eaters ; the limbs were stout, the feet on the con- 
trary very weak, as in the creodonts. 
ture of the foot renders it all but certain that this 
animal was digitigrade, though some features of its 
plantigrade ancestry, as the articulation of the as- 
tragalus with the cuboid, are retained. 
Ficurr 2.—Left hind foot 4,5 was a small animal, standing hardly more than 
