152 



DINOCERATA. 



below, where, during- life, it doubtless supported a thick pad, resting- on 

 the ground. 



The calcancuni articulated mainly with two bones, the astragalus and 

 the cuboid. Some specimens, and perliaps all, present a small face where 

 the fibula touched this bone. 



The articulation with the astragalus is, in most specimens, divided into 

 two distinct facets (figures 144, a and a') by a deep groove. In some 

 cases, however, these facets are coalescent posteriorly, as in Plate XLVIII, 

 figures 1 and 5, and in figure 143, corresponding with a similar coalescence 

 of faces on the astragalus. 



The foce for the cuboid is small, and irregularly rounded, or oval, as 

 seen in Plate XLVIII, figure 1, and is usually more or less confluent with 

 the inner face for the astragalus, but is well separated from the outer face 

 for that bone. 



The great tuberosity for the attachment of the tendo Achillis is 

 very short, proportionally shorter than in the elephant. 



FiGl-RE U!.— Calcaneuui of DiMicenis niinthile. M.irsli (N^n. 1210); tn|. view. 

 FiGUUE 144. — •CalcaDeum of Dinoreras minOnle. (No. 120.8); top view. 

 a. and a', faces for astragalus. 



Both figures are one-half natural size. 



Two specimens of the calcaneum in different individuals of Dinoceras 

 are represented in the woodcuts above. 



Measurements of three specimens of the calcaneum in the Dinocerata 

 are as follows : 



