GEOLOGICAL SURVEY OF THE TERRITORIES. 577 



allied species. It is represented by portions of ribs and limbs, of which 

 the ulmi is described under Uintathermm. Two or three hundred yards 

 from the typical specimen, I obtained remains of almost all parts of the 

 skeleton of what is probably the present species. The femur is identical 

 in character. The specimen embraces cervical, dorsal, and lumbar verte- 

 brae, ulna, both femora and tibiae, astragalus, navicular, &c., and large 

 parts of the scapulae and i)elvis. 



The scapula, in its proximal portions, differs little from that of Loxo- 

 lophodon cornutus, beyond its inferior size. The coracoid is a compressed 

 tubercle inclosing a groove with the glenoid cavity. 



Measurements. 



M. 



Diameter glenoid cavity, (lougitudiual) 0. 168 



Diameter glenoid cavity, (transverse) 098 



The OS pubis displays a strong pectineal rugosity, commencing near 

 the acetabulum. 



Measurements. 



M. 



Long diameter of acetabulum 0. 143 



Length common jmbic suture 108 



Diameter pubis, near acetabulum 052 



The femur is nearly as long as that of LoxolopJiodon cormitus, but is 

 more slender, and has a relatively smaller head. It is flattened fore 

 and aft, and the great trochanter is much expanded and with a shallow 

 concavity on the posterior face. There is a marked concavity ou the 

 posterior face of the shaft above the condyles. There is a rudiment of 

 the little trochanter. The tibia is scarcely three-fourths the length of 

 the femur, and has a rather contracted shaft, which is in section rounded 

 triangular, one angle presenting forward. There is no spine except a 

 rudiment in the swollen upper portion of the anterior ridge. The articu- 

 lar surfaces are together rather narrowly transverse. They are sepa- 

 rated by a keel which is undivided posteriorly ; anteriorly, the contiguous 

 margins of the cotyli separate. The long axis of the inner of these is 

 directed autero-posteriorly outward in front ; of the other, similar but 

 much more transverse. It overhangs the shaft outward and backward, 

 and supports beneath, the sub-round down-looking fibular articular sur- 

 face. The distal articular surface is distinguished from allied species 

 by the downward prominence of the malleolar process, the antero-poste- 

 rior width, and the greater extent of the fibular articular face. The 

 face is slightly concave antero-posteriorly, and openly sigmoidal trans- 

 versely. 



Measurements of leg. 



M. 



Length with astragalus in place 1. '200 



Fenmr, length 750 



Femur, diameter ball 118 



Femur, width at great trochanter 220 



Femur, width at middle shaft 091 



Femur, depth at middle shaft 060 



Tibia, length 470 



Tibia, width proximal surfaces, (transverse) 147 



Tibia, width proximal surfaces, (autero-posterior) 07 J 



Tibia, transverse diameter shaft 0(51 



Tibia, autero-posterior diameter shaft 065 



Tibia, antero-ijosterior diameter shaft, distal articulation 092 



Tibia, transverse diameter shaft, distal articulation 121 



Fibula, length ' 430 



37 G S 



