38 DESCRIPTION OF THE SKELETON. 



First First Range. Scctphoides (Plates XI. and XII. E). — This bone 



Range. 



scarcely deserves the name of scaphoid, as it has but a slight excavation, 

 which is on its outer surface. It is proportionally longer in the elephant 

 than in the Mastodon. It is oblong from above downwards; convex and 

 rough on its inner face, irregular on its outer; it presents a well-defined 

 anterior and a rounded posterior edge, and is flattened in the lateral 

 direction. It has a small superior articulating surface, by which it is 

 connected with the radius : externally it is connected with the semi-lunare 

 and trapezoides, inferiorly and exteriorly with the trapezoides ; but in the 

 elephant, by its internal surface with the trapezium. 

 semi- Semi-lunare (Plates XL and XII. D). — This bone has rather a wedge- 



luii are. 



like than a lunatecl form. It is large and flat anteriorly, small and rounded 

 posteriorly. The superior face is slightly excavated, of a triangular form, 

 for articulation principally with the radius. Its inferior face is also exca- 

 vated, and of a triangular form ; by this it is articulated principally with 

 the os magnum, but partly with the trapezoides, and on the outside with the 

 unciforme. Internally it is connected with the scaphoid, and externally 

 with the cuneiform bones. 

 cuneiforme. Ciineiforme (Plate XL C). — It is properly so named, having a large 



internal edge connected with the lunare, and tapering to a rounded external 

 tuberosity, behind which is situated the pisiforme. Its superior excavated 

 face receives the lower extremity of the ulna ; its inferior convex surface 

 lies on the unciforme. In the elephant, the superior face is much more 

 excavated than in the Mastodon. 

 Pisiforme. Pisiforme (Plate XII. F). — It bears no resemblance to that in the 



human subject. It is of an oblong form, lunated on its internal edge, convex 

 on its external. It is suspended, as it were, by a small superior anterior 



