284 F. -B. Loomis — On Ticholeptus Rusticus and 



portion in which I feel any donbt but it was associated 

 with the skull. To me it seems too long, especially the 

 ilium but the animal is slenderly built. Without going 

 into details, the features I would call attention to are that 

 the feet are of the medium type, with metapodials com- 

 parable with those of Oreodon; the phalanges are short 

 and stocky, especially the unguals, which are flattened 

 from top to bottom in strong contrast to the same bones in 

 Merychyus ; the radius is of moderate length and has a 

 considerable curvature ; the tibia is rather stocky, and 

 both radius and ulna and the tibia and fibula are entirely 

 separate. 



Fig. 2. Skull of Ticholeptus rusticus from above; 2/5 nat. size. 



The following measurements will indicate the size of the 

 animal, but it is to be remembered that there is consider- 

 able range in the figures for any one part of the skeleton, 

 for we find both male and female, and younger and older 

 individuals. I have taken for measurement those of the 

 larger size, though there is less then 10% variation be- 

 tween the largest individuals and the smaller ones. 



mm. 



Skull, length from incisors to occipital condyles 254 



length of dental series 138 



length of premolars 53 



length of molar series 81 



