594 THE BEIDGEE EPOCH. 



The bones consist of several vertebrae, some carpal bones, and the 

 entire hind limb of the left side except the toes and the cuneiform and 

 navicular bones. 



The odontoid process is very stout, with a descending trihedral apex 

 Length M. .078; diameter at base, .048. A dorsal vertebra, with a single 

 (anterior) capitular articular face, is quite concave in front 



M. 



Diameter anteroposteriorly 057 



Diameter vertically 094 



A cervical vertebra has the proportions of the dox'sal as to its centrum, 

 thus differing materially from species previously described. The articular 

 surfaces are slightly concave. 



M. 



Length (anteroposteriorly) 065 



Diameter, vertical 087 



Diameter, transverse 100 



The femur resembles that of the other species already described, but 

 is remarkable for the relatively small size of the head. While the lengths 

 of the bone are not very diflPerent, and the expanse of the great trochanter 

 about the same, the head of L. cornutus is large, the present one is very 

 much smaller, and that of E. pressicornis intermediate There is a rudi- 

 mental third trochanter, and the condyles are as large as, and similar to, 

 those of E. pressicortiis. The external marginal condylar ridge is quite 

 short. The shaft is broken and some small pieces lost; it is now 26 inches 

 long, but was no doubt longer when complete. 



Measurements of femur. 



II. 



Exjianse of great trochanter 230 



Diameter of head 109 



Diameter of shaft at middle 093 



Diameter above condyles 15-2 



Diameter at extremity of condyles 139 



Diameter (vertical) of inner condyle 125 



The tibia is perfectly preserved. It is short and stout, and with mass- 

 ive extremities. The outer basal part of the spine remains, and is promi- 

 nent. The cotyli are not oblique; the inner is sub-round, the outer trans- 

 verse, widening outwardly; their long axes are at right angles to each 

 other. The spine is a low ridge of contact of the cotyli. The superior 



