PETERSON : NEW CARNIVORES FROM MIOCENE OF WESTERN NEBRASKA 251 
same ratio as the entocuneiform has decreased. Both meso- and ectocuneiforms are 
therefore of approximately the same proportionate size as in the Oligocene form. 
The dorsal face has a more perfect diamond- 
shaped appearance than in Canis or Felis, 
which is due chiefly to the greater obliquity 
of the proximal and distal articular facets in 
Daphenodon. The facet for the navicular on 
the proximal face is especially oblique, due 
to a prominent ascending process on the fib- 
ular angle. This process has a large facet for 
Seinen ; Br as ; 
the cuboid on its fibular face, and near the Fibs dat aici aa saat an. 
distal end there are two minute facets for Mt.  superbus. Nat. size. 1, dorsal view; 2, fibular 
TAY, conake (ehoyistall havsl (ote) coydniere yoyeMbantene,  AMaye, 9 WH Sh EID One cy ih etic ay Oey ee 
nae 3 view; 6,superior view. 
tibial face has three facets, one proximally for ae 
the mesocuneiform referred to above, and two distally for Mt. Il. The distal face 
is more oblique and also more concave antero-posteriorly than in the recent forms, 
while the plantar process is reduced in size and is canine rather than feline in its 
general characters. 
MEASUREMENTS OF ECTOCUNEIFORM. 
Mm. 
Greatess Antero“ posterior: Cad We uel tar. cst rcereyieawewes civoccedeves reths sPereeb rsa sbuain gndec scot cucu aval n ceaeee tte 21 
vdeo 
ceil bes 
Greatest transverse diameter.. 
Greatest vertical diameter 
Cuboid. —In comparison the cuboid is of a slightly greater transverse and less 
vertical diameter than that of Daphenus. 
Otherwise there are no striking differences 
in this bone in the two genera. The dor- 
sal face is slightly concave in the proximo- 
distal direction, while on the fibular plantar 
face is found the deeply excavated groove 
for the peroneus longus tendon. Above this 
groove is a large tuberosity which forms a 
solid, broad, oblique ridge extending from 
the proximo-fibular to the distal tibial angle, 
Fia. 49. Cuboid (right side) of D. superbus. : : 
Nat. size. 1, dorsal view ; 2, superior view ; 3, plan- and not separated by a vertical sulcus as in 
dd EME a i) e, . 
tar view ; 4, inferior view ; 5, tibial view ; 6, fibular Canis. Superior to this ridge the plantar 
view. face is taken up by a large, rugose, excavated 
area for ligamentous insertions. The fibular face is nearly plane and has three artic- 
