R. S. Lull — Neiv Tertiary Artiodactyls. 123 



hand, the proximal end of the fibuia was free, articulating 

 by a facet on the equivalent portion of the tibia. About 

 an inch of what is undoubtedly the proximal end of the 

 left fibula is present. The epiphysis is lacking, but the 

 hollow shaft shows within the length no sign of diminu- 

 tion. Its total length, however, one can not conjecture. 

 Several areas for tendinous attachment appear just be- 

 neath the expanded summit of the bone. 



Measurements of the tibia and fibula follow : 



Aletomeryx Antilocapra 



Tibia. 



m. 



m. 



Eatio 



Length over all 



. 1750 



•2720 



1-54 



Prox. end, ant. -post, diameter . 



. -0333 



•0546 



1-64 



Prox. end, transverse diameter . 



. -0322 



•0470 



1-46 



Mid-shaft, ant. -post, diameter . 



. 0122 



0180 



1-46 



Mid-shaft, transverse diameter 



. -0130 



•0195 



1-50 



Distal end, ant. -post, diameter 



. 0160 



•0250 



1-56 



Distal end, transverse diameter. 



. -0209 



•0328 



1-58 

 Av. 1-53 



Fibula, distal end. 









Height 



. -0090 



0160 



1-76 



Ant. -post, diameter 



. 0118 



•0177 



1-50 



Av. 1-63 



Tarsus (figs. 21, 22 B). — This region of the foot again 

 resembles that of the antelope very closely, as does the 

 metatarsus. In Aletomeryx, the first cuneiform can not 

 be identified in the fossil material and seems to be about 

 the only element lacking, aside from those mentioned 

 above. That it was present, however, is evident. 



Dimensions of the assembled tarsus follow : 



Aletomeryx Antilocapra 



m. m. Eatio 

 Length, tuber calcis to cuneiform 



III 0610 -0930 1-51 



Width across calcaneum and as- 

 tragalus -0180 0295 1-63 



Ant. -post, diameter, calcaneum 



and astragalus -0225 -0370 1-66 



Av. 1-60 



