222 ME. ST. G. MIVAET OX THE SKELETON OF THE PRIMATES. 



separating these two surfaces; d, surface for the semihinare; e, that for the fibro- 



cartilage of the wrist-joint. 



Fig. 12. Left pisiforme of No. SB: its dorsal (or extensor) surface. 



Fig. 13. Palmar aspect of the same. 



Fig. 14. Its articular surface for the cuneiforms. 



Fig. 15. Left trapezium of No. 3 B: its outer (or extensor) surface. 



Fig, 16. The same aspect of the right trapezium of the skeleton No. 3 A in the British 



Museum, 

 Fig. 17. Left trapezium of No. 3B: its palmar surface. 

 Fig. 18. The same aspect of the right trapezium of No. 3 A. 

 Fig. 19. Left trapezium of No. 3 B: its proximal end. 

 Fig. 20. Distal end of left trapezium of No. 3 B. 



«, saddle-shaped surface for articulation with first metacarpal ; b, surface for second 

 metacarpal ; c, surface for trapezoides ; d, that for scaphoides. 

 Fig. 21. Left trapezoides; its dorsal (or extensor) surface. 

 Fig. 22. Distal surface of the same. 

 Fig. 23. Proximal surface of the same. 



a, the larger (or ulnar) surface for articulation with the second metacarpal ; S, smaller 

 (or radial) surface for articulation with the same metacarpal ; c, facet for the magnum ; 

 d, surface for the intermedium. 



Fig. 24. Left magnum of No. 3 B : its dorsal surface. 

 Fig. 25. Palmar surface of the same. 

 Fig. 26. Radial aspect of the same. 

 Fig. 27. Ulnar aspect of the same. 

 Fiff. 28. Distal surface of the same. 



a. notch on radial side of distal surface ; b, notch on ulnar side of the same surface ; 

 c, palmar articular surface for second metacarpal ; d, dorsal articular surface for the 

 same metacarpal ; e, surface for the trapezoides ; /'/', surface for the unciforme. 

 Fig. 29. Left unciforme of No. SB: its dorsal surface. 

 Fig. 30. Palmar surface of the same. 

 Fig. 31. Eadial aspect of the same. 

 Fig. 32. Ulnar aspect of the same. 

 Fig. 33. Distal surface of the same. 



«, its palmar process ; b V, articular surface for the magnum ; c, that for the 

 cuneiforme. 

 Fig. 34. Proximal surfaces of the four ulnar metacarpals of the left manus of the 



skeleton No. 3 B. 

 Fig. 35. Dorsum of tii-st metacarpal of the same manus. 

 Fig. 36. Radial side of the same (first) metacarpal. 

 Fig. 37. Dorsal aspect of second metacarpal of the same manus. 



