Peterson : A New Titanothere from the Uinta Eocene. 47 



latter species, and also longer than in the Princeton specimen of Dipla- 

 codon as represented on PI. VIII in Scott and Osborn's work. The 

 pelvis as a whole was consequently proportionally longer and probably 

 narrower than in the Oligocene genus. The ischium and pubis are 

 not represented. 



In No. 2860 the lower half of the femur is present. The tibial and 

 dorsal faces of the shaft are convex, while posteriorly it presents a 

 flat surface. On the fibu- 

 lar angle may be seen the /f^v^' 

 lower [portion of the ( -^.^^"^^^V '''^ 

 prominent ridge below the /-i~$:-^t 

 third trochanter, which /-iffio^g^^^;^ "'-^ 

 decreases in prominence (^^'^L^i^'>^^'^^:^-^^:^^.^~^::~^ 

 xn Its downward course. V'J; i'//v7 /'•^--^^'^^ \l^l~^"- -^ ■--«- 

 Near the distal end the y/j-V^//''/'^ ^ :- Jj«?-' ""^ 

 fibular border presents a V--:^ 'j,i ^ 

 roughened area for mus- 

 cular attachment, back ^ . t^ . ,-^ 



Fig. 12. Dtploceras oshorntv^t^xsox).. (type. 



and below which is the ^^_ ^g^^ ^ ^ i Lateral view of pelvis. 

 rather shallow supracon- 



dylan fossa. Distally the condyles are rather well separated by the 

 deep and broad intercondylar fossa. The lateral sides of the distal 

 end (especially the fibular) is well marked by the rugose attachment 

 for muscles. The rotulai trochlea is propoitionally deeper and nar- 

 rower than in Titanotherium and the fossa immediately above it is 

 much deeper and better defined. In this respect the present genus 

 agrees better with Fig. 5 on Plate VIII of Scott and Osborn's 

 publication. 



Measurements. 



Femur. 



No. 2860 

 Mm. 



Total length of the fragment 280 



Transverse diameter of shaft about the middle region of the fragment ... 60 



Transverse diameter of distal end 108 



Antero-posterior diameter of distal end no 



The greater part of the tibia is represented in the paratype No. 

 2860, but it is badly crushed. Another individual No. 2862 has both 

 tibiae present and is approximately of the same size as the individuals 



