582 GEOLOGICAL SURVEY OF THE TERRITORIES. 



These remains, wliicli were not found in association with a cranium, 

 consist of several vertebroe, some carpal bones, and the entire hind limb 

 of the left side except the toes and the cuneiform and navicular bones. 



The odontoid ])i()cess 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. 



Measurements. 



M. 



Diameter autero-posteriorly f'<'>7 



Diuiueter vertically '^^4 



A cervical vertebra has the proportions of the dorsal as to its cent- 

 rum, thus differing materially from species previously described. The 

 articular surfaces are slightly concave. 



Measifre7)ients. 



M. 



Length (autero-posteriorly) 0. 065 



Diameter, vertical 'J87 



Diameter, transverse 100 



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

 i.s remarkable for the relatively small size of the head. While the 

 lengths of the bone are not very different, and the expanse of the great 

 trochanter about the same, the head of X. cornufus is large, the present 

 one is very much smaller, and that of U. pressicornis intermediate. 

 There is a rudimental third trochanter, and the condyles are as large 

 as, and similar to, those of E. jrressicorms. The external marginal con- 

 dylar ridge is quite short. The shaft is broken and some small pieces 

 lo^t ; it is now 20 inches long, but was no doubt longer when complete. 



Measurements of femur. 



-^ '^ M. 



Expanse of great trochanter 0. 230 



Diameter of head lOp 



Diameter of shaft at middle 093 



Diameter ahove condyles Ip2 



Diameter at extremity of condyles - • • 1-^9 



Diameter (vertical) of inner condyle l"<io 



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 

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

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

 each other. The crest is a low ridge of contact of the cotyli. The 

 superior fibular face is a transverse oval; the inferior much smaller than 

 in U. preitskornis. The shaft is contracted, and flattened behind and on 

 the inner side. The distal extremity is transverse, less truncated for 

 the fibula thau in E. pressicornis, less convex behind, and with a less 

 prominent external malleolus. The point dividing the astragalus be- 

 hind is more prominent. 



Measurements of tibia. 



Total length 0.398 



Diameter head longitudinal 080 



Diameter liead transverse 1-^^ 



Diameter shaft transverse • ■ Ob.^ 



Diameter do. antero-postcrior 0^'2 



Diameter distal art iculation antero-posterior 0/7 



Diameter distal articulation transverse 11;^ 



Diameter distal cxtrendty, fore and aft 093 



Diameter distal extremity, transverse 



