PLATE CCIX 



Left Cuneiform Carpi (Pyramidal) and Eight Pisiform of the Type of Brontops robustus Marsh 



Plate prepared under the direction of Professor Marsh. One-half natural size. (See p. 668) 



1, Left pyramidal bone, anterior view; 2, the same, medial or inner view (radial side); 3, the same, posterior view; 4, the same, 

 lateral or outer view (ulnar side); 5, the same, proximal end; 6, the same, distal end. l-l', Facets for articidation with lunar, 

 ?-, facet for articulation with radius; ps, facet for articulation with pisiform; ul, facet for articulation with ulna; un, facet for 

 articulation with unciform. 



7, Right pisiform bone, inferior view; 8, the same, lateral or outer view (ulnar side); 9, the same, superior view; 10, the same, 

 medial or inner view (radial side); 11, the same, proximal end; 12, the same, distal end. p, Facet for articulation with 

 pyramidal; id, facet for articulation with ulna. 



The ligamentous attachments of these elements are given on page 716. 



