38 



E. M. MUSEUM MEMOIRS. 



Elcphas. The crest of the iUum has about the same contour, but is thickened 

 and bifid where it overhangs the acetabulum. The obturator foramen is more 

 rounded and the symphysis pubis longer. The sacral surfaces are, on the other 

 hand, very short and not raised above the sacral spines. 



Fore Limb. 



The Scapula is strongly proboscidian in outline, with a sub-triangular shape. 

 On the external side the pre-scapular fossa is concave antero-posteriorly. The 

 post-scapular fossa is much the larger and less concave. The spine rises slowly 

 from the supra-scapular border, extending to within an inch of the glenoid 

 cavity ; it is antroverted with a rudimentary acromion. The coracoid process is 

 a low, rugose tuberosity. The inner surface of the scapula has a large, smooth 

 median ridge. The supra-scapular border is much thickened. 



As indicated in an earlier description, the resemblance to the scapula of the 

 Proboscidia is more closely marked than in any other of the corresponding 

 bones. The points of similarity are : (i), the subtriangular shape ; (2), the 

 same relative proportions between the fossae ; (3), the antroversion of the spine ; 

 (4), the glenoid cavity looking directly downwards. The differences are, (i), in 

 the dissimilar proportion of the glenoid cavity ; (2), the great thickening of 

 the spine at each end. 



The Humerus is stout and twisted upon its axis. As in Elephas it contrasts 

 in the greatly projecting tuberosities with the comparatively smooth femur. 

 The head is large, hemispherical, and sessile, placed almost vertically above the 

 axis of the shaft. The great tuberosity is high and heavy, and separated by a 

 shallow bicipital groove from the lesser tuberosity, which is faint. The deltoid 

 ridge is prominent, but not recurved ; it is placed about half-way up the shaft. 

 The supinator ridge does not present the development we meet with in the pro- 

 boscidian humerus ; it is a faint rugose line. The trochlear surfaces are sub- 

 equal in size ; above the radial surface is situated a rather deep supra-trochlear 

 fossa, forming the inner limit of the external condylar tuberosity, which is the most 

 prominent. The internal tuberosity is more massive. The anconeal fossa is 

 median in position and quite deep. 



The Radius is placed directly anterior to the Ulna (the position of these 

 bones and the description which follows are partly based upon the complete 

 fore-leg of Loxolophodon in our collection). Above, it has an exact median posi- 

 tion, the proximal surface divided by a central ridge for the two facets of the 

 trochlea. Below, the shaft, which is slightly twisted and narrowed in its cen- 

 tral portion, passes across the ulna to the antero-internal side of the leg. This 



