RIGGS: HOPLOPHONEUS OCCIDENTALIS. 47 



Of the front foot, only the unciform and the proximal half of the 

 fifth metacarpal, and the distal end of the second are present. The 

 unciform, as seen from the dorsal side, is roughly a triangle in 

 which the anterior border is slightly concave and the posterior angle 

 rounded. The surface for the cuneiform is extended downward 

 posteriorly, and is not bounded below by a continuous groove as in 

 the lion. The surface for the scapho-Iunar is strongly convex 

 throughout, curving around the posterior end. The surface for 

 articulation with the os magnum extends downward to the lower 

 border of the anterior face, and is continuous with the scapho-lunar 

 surface posteriorly. The proximal end of the fifth metacarpal is 

 less expanded than in the lion, its external tuberosity is less prom- 

 inent, and is not separated from the articulating surface by a 

 groove. Its posterior end is rounded, and articulates with about 

 half of the anterior surface of the unciform. The distal end of the 

 second metacarpal is proportionally broad and strong. A first 

 phalanx is short, stout, and strongly curved; the protuberances of 

 the proximal end are shorter and the inferior surface is less deepl}' 

 notched than in the lion. 



MEASUREMENTS OF THE FORE LEG. 



mm. 



Scapula, length of glenoid cavity 39 



" from base of spine to posterior border 13 



" from base of spine to anterior border 29 



" thickness of posterior border 14 



Humerus, length 236* 



" diameter of head and great trochanter 65* 



" greatest diameter of distal end 74 



Ulna, length 242 



" end of olecranon to beak 53 



" olecranon to coronoid process 79 



Radius, approximate length 177 



' ' diameter of head 32 



Unciform, length 24 



' ' breadth 22 



Second metacarpal, breadth of distal end 19 



Phalanx, length 35 



" breadth of proximal end 20 



* Approximate. 



I'elvic gif«tle. Between the two specimens the pelvis is almost 



complete. Compared with that of the lion it is less constricted at 



the acetabula. The iliac rami of the ischia are straighter, and 



less divergent posteriorly. The ischiatic rami of the pubis are 



