778 

 6134. The trapezoides. 



5135. The os magnum. 



The surface for the middle metacarpal is much produced antero-posteriorly, but is emar- 

 ginate on each side opposite its middle part ; the outer notch being the deepest, and leading 

 to a deep irregular fossa next the trapezium. 



5136. The unciforme. 



5137. The metacarpal of the index of the right hand. 



It is shorter and stronger than in the Orang-utan. 



5138. The metacarpal of the third digit. 



It is rather longer than that of the index. The proximal articulation is notched on each 

 side. 



5139. The metacarpal of the fourth digit. 



This is a little shorter than the preceding. The proximal articulation presents a central 

 depression, and is indented upon the radial side by a notch which divides the surface articu- 

 lating with the middle metacarpal. The opposite surface for the fifth metacarpal is single 

 and entire. 



5140. The metacarpal of the fifth digit. 



This is shorter and more slender than the preceding. 



5141. The right os innominatum. 



It is longer in proportion to its breadth than in the Orang-utan. The expanded part of 

 the ilium is slightly concave anteriorly, but in the Orang it is plane. The spine of the 

 ischium is parallel with the middle of the obturator foramen, but in the Orang it is parallel 

 with the upper border of that foramen. The symphysis pubis is longer than in the Orang. 

 The proportions of the greater to the lesser iscliiatic notch are, in the Chimpanzee, more like 

 those in Man. 



5142. The left 05 innominatum. 



