1898.] 



Osborn. Sktieton of CoryphoJoii radians. 



85 



Measurements of Skeleton. 



Length incisors to perpendicular of 



tail 



Height at withers 



P'ore Limb : 



Scapula ^ 



Humerus 



Radius 



Manus, total 



Hind Limb : 



Pelvis, transverse. 



Femur 



Tibia 



Pes, total 



2.38 

 1.03 



•43 



•30 

 .25 

 ■17 

 • 71 



■47 



.28 



•15 



2' 81^" 



or 

 .82 



2' 11^' 



or 

 .90 



These measurements show that the tibia is only an inch longer than the radius, while 

 the femur is three inches longer than the humerus. 



The anterior pair of ribs is extremely short, the succeeding 

 ribs increase in length and decrease in diameter, passing from a 

 flattened into a trihedral form in D.6 and 7, and finally into an 

 oval form in 1). 10-15. ^ characteristic feature of the ribs of D. 

 6-1 1 is a pit upon the upper surface just external to the 

 tubercle. 



The zygapophyses have horizontal faces as far back as D.15. 

 In l).i4 and 15 they turn obliquely upwards, the faces being 

 vertically flattened. In L. i to L.5 the zygapophyses are sharply 

 concave and nearly vertical in position. The characters of the 

 caudals are not certainly known, the fev/ centra being restored 

 from a number of different specimens. We have not ventured to 

 give the tail the remarkably flattened character already described 

 in a specimen found in i8g2. 



Fore Limb. — The scapula is vertically elongate, terminating in a 

 point superiorly, and distinguished from that of Uintatherium by 

 nearly subequal supraspinatus and infraspinatus fossse. It is 

 partly restored in the mount, but perfectly preserved in No. 2873. 

 The spine rises near the superior border, is slightly thickened and 

 reflected, and passes down into the acromion process, which turns 

 sharply forwards and overhangs the great tuberosity of the 



