815 



> 



5230. The right lunare. 



It is more nearly equal in size to that of the Chimpanzee than the scaphoides is. The 

 posterior boundary of the unciform cavity is thicker and less angular : the surface for the 

 cuneiforme is less extensive and less flat. 



5231. The right cuneiforme. 



The thickness of this bone in the axis of the wrist is much greater than in the Chim- 

 panzee, especially at the back part, which is crossed by a thick rounded transverse bar. The 

 surface for the lunare is more concave, that for the pisitbrrne is more elongated, than in the 

 Chimpanzee. 



5232. The right pisiforme. 



This is much shorter than in the Chimpanzee. 



5233. The right trapezium. 



The bone is thicker in proportion to its breadth : instead of the tuberosity there is an 

 oblique ridge upon the upper surface : the surface for the scaphoid is larger, as is also the 

 concavo-convex surface for the metacarpal of the thumb, than in the Chimpanzee. 



5234. The right trapezoides. 



The surfaces for the trapezium and the scaphoides meet at a less acute angle than in the 

 Chimpanzee, and the back surface of the bone is less convex. 



5235. The right os magnum. 



The surface for the unciforme is divided into two, and is not continuous as in the Chim- 

 panzee. That for the middle metacarpal is broader transversely, shorter from before back- 

 wards, and is not emarginate on either side. 



5236. The right unciforme. 



This is smaller than in the Chimpanzee. The surface for the os magnum, which is a con- 

 tinuous elongated tract in the Chimpanzee, is divided into two in Man : the surfaces for the 

 fourth and fifth metacarpals are smaller and more simple in Man : they are continued upon 

 the unciform process, and each surface upon the body of the unciforme presents a smooth pro- 

 tuberance adapted to corresponding concavities at the base of the metacarpals, which is not 

 the case in the Chimpanzee. 



