PETERSON : NEW CARNIVORES FROM MIOCENE OF WESTERN NEBRASKA 237 
process for attachment of muscles. On 
the ulnar face is a large facet for the 
trapezoid, which extends well back, coy- 
ering the base of the palmar process, 
referred to above. On the proximal 
radial angle there are well formed facets 
6 
Fic. 32. Trapezium (right side) of D. superbus. 
Nat. size. 1, dorsal view; 2, radial view; 3, superior 
for the scapholunar; the one on the ra- 
dial angle is scarcely separable from the 
one on the palmar process. Distally view: 4, posterior view; §, ulnar view; 6, inferior 
there is a large obliquely placed facet view. 
for Me. I which is concave from before backwards. 
MEASUREMENTS OF TRAPEZIUM. 
Greatest antero-posterior diameter 
Greatest transverse diameter 
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Trapezoid.— The trapezoid is not known, but judging from the space in the car- 
pus when the trapezium is placed in position it would seem that the trapezoid is 
larger than the trapezium which is the 
reverse of what is seen in Daphenus, 
studied by Mr. Hatcher (J. ¢., p. 86) and 
compared by the present writer. 
Magnum.—The magnum has a small 
dorsal face, but is in general a much 
larger bone than is indicated by this sur- 
face. The dorso-radial angle has a small 
facet for the trapezoid and this region of 
Fre, 33. Magnum (left side) of D. superbus, Nat, the bone is much depressed, while the 
size. 1, dorsal view; 2, ulnar view; 3, radial view; radial face has a great vertical diameter, 
4, palmar views 5, inferior view; 6, superior view. | due to the sharp ridge which extends up- 
ward, articulating radially with the scapho-lunar, and on the ulnar face with the 
unciform. In Canis the ulnar face has a large dorsal and a smaller palmar facet for 
the unciform; the two facets being separated by a deep groove, while in Dapheno- 
don the facet is uninterrupted and surrounds an excavated area in the middle and 
posterior portions of the ulnar face. The radial face of the magnum is also deeply 
excavated. The palmar tuberosity is of considerable vertical diameter, while trans- 
versely it is compressed. Distally the bone is occupied by two facets, the larger for 
