1884.| The Condylarthra. 903 
an inferior keel. The disparity in size between the anterior dor- 
sals and lumbars is marked, The odontoid process is cylindric. 
Metapophyses of lumbars well marked. No anapophyses. Neu- 
ral canal rather large. 
The head of the scapula has a curved coracoid process. The 
spine rises abruptly from the neck. The humerus is much like 
that of Phenacodus or a carnivore. The tuberosities are not pro- 
duced, and there is no external epicondyle. The internal epi- 
condyle is large, and sends upwards the bridge that incloses the 
epicondylar foramen. 
“i 1 we 2S ~ 
_ Fis. 26.—Meniscotherium, three quarters nat. size. Fig. a, M. ferrerubre, lower 
jaw, right side; a’,do. from above, the incisor teeth just protruding. Fig. 4, M. tapi- 
acitis, lower jaw right side. All from the Wasatch epoch of New Mexico. Original, 
from Report U. S Geol. Survey Terrs., II. 
The pelvis is not well preserved in the specimens. The ilium 
Shows a rather narrow, triangular narrow, neck, a well-marked 
anterior inferior spine, an open acetabular groove. The femur 
Shows a fossa ligamenti teris, and the third trochanter on the middle 
of the shaft, and well developed. The tibia has an anterior crest, 
and no notch on the antero-external edge of the head. The in- 
ternal malleolus is a prominent tuberosity, and the astragalar face 
is scarcely grooved, and is oblique, as in the Creodonta. The 
distal extremity of the fibula articulates with the sides of the 
astragalus, but not with the calcaneum. The calcaneum much 
resembles that of Phenacodus. It is elongate and the astragalar 
facet is not longitudinal, but is very oblique. The astragalus has 
trochlear keels of unequal height, and a shallow groove between 
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