PETERSON : NEW CARNIVORES FROM MIOCENE OF WESTERN NEBRASKA 239 
and the articulation for the trapezium is broader. In comparative size the bone is 
very little smaller than in Daphawnus and consequently 
much heavier and longer than in Canis. On the ulnar face 
the rugosity for the ligamentary attachment to Me. II is 
quite prominent and the tuberosity on the radial side of the 
head is as large proportionally as in recent cats, though the 
bone as a whole however, is, lighter and longer than Me. I of 
the pollex in the latter. The distal end has a well formed 
facet which is separated palmarly by a prominent keel. ‘The Fi! 35. Dorsal and Ra- 
dial Views of Left Metacar- 
shaft is slightly curved, so that the distal end points a little palivolDerunerouaeNatietre: 
in the ulnar direction. 
MEASUREMENTS OF METACARPAL I. 
Greatest transverse diameter of head.. 
Metacarpal II. — While the actual length of the first metacarpal is equal to that 
in Canis the second, third, fourth, and fifth are much shorter. This gives a char- 
acteristically low and broad appearance to the manus, as in 
Meles or perhaps even more similar to that in Arctictis. 
Thus the second and fifth are of subequal length and are 
considerably shorter than the third and fourth. The head 
of Me. II has the antero-posterior diameter much greater iW 
than the transverse, which is due to the comparatively small 
extent in the ulnar direction of the flange which carries the 
facet for Me. III. In the eats this flange is very prominent 
on Me. II and III, and forms a more completely interlock- 
ing condition of the metacarpals than is seen in the present 
Fic. 36. Dorsal and Radial genus and in the recent dogs generally. The shaft is sub- 
Views of Left Metacarpal II 
: cylindrical in cross-section and strongly arched in the dor- 
of D. superbus. Nat. size. 
sal direction. The distal end is suddenly expanded and 
the trochlea is more cat- than dog-like. 
MEASUREMENTS OF METACARPAL II. 
Greatest Wen Geb pisscictvi ceves dechseteeveeveactbsucs Wate kites kati aes obtobwok= FreW ure tereedCs vee cessuicneeseaG aes 
Greatest antero-posterior diameter of head 
Greatest transverse diameter of head.. 
