PELYIC LIMBS. 85 



and bears on its distal end the second metatarsal. It is not 

 visible in ventral view. 



Medial Cuneiform. Entoatnciform . Os amciformc priimim 

 BNA (Fig. 58, g]. The medial cuneiform lies on the medial 

 side of the foot. It is a flat triangular bone about twice as long 

 as broad, and broader at its proximal end than at the distal 

 end. It bears on its distal end the rudimentary first meta- 

 tarsal. The proximal end is oblique and bears a concave facet 

 for the lateral distal facet of the scaphoid (</). The lateral 

 surface has a concave facet at its proximal end for the inter- 

 mediate cuneiform, while the distal portion is applied against 

 the medial surface of the second metatarsal. 



Bones of the Foot or Pes (Fig. 58). Mctatarsals. Meta- 

 tarsus (Fig. 58, 1-5). The metatarsals are five in number. 

 They bear a close resemblance to the metacarpals, but they 

 may be distinguished by their bases. 



The first metacarpal (i) is rudimentary and conical. Its 

 base has a facet for the distal end of the medial cuneiform (g\ 

 while the outer surface fits into a depression on the inner sur- 

 face of the base of the second metatarsal. 



The second (2). The proximal surface of the base is tri- 

 angular, corresponding to the distal end of the intermediate 

 cuneiform. The medial surface is marked by two concavities, 

 one along the proximal border for the distal end of the medial 

 cuneiform, and one distad of this for the first metatarsal. The 

 lateral surface bears on the proximal margin an oblique tri- 

 angular facet dorsad and a similar facet ventrad, both for the 

 lateral cuneiform (e). Distad of these facets is a rough ridge. 



The third (s). The proximal end of its base is a triangular 

 facet with the apex directed ventrad and the sides excavated. 

 It is for the distal end of the lateral cuneiform (e). Its medial 

 surface presents a depression which receives the ridge of the 

 second metatarsal. On the lateral surface a short distance 

 distad of the proximal border is a triangular concave facet, and 

 near the proximal border ventrad a second concave facet. 

 Both are for the fourth metatarsal. 



The fourth (4). The proximal end is convex, notched 

 medially and facetted for the cuboid (<:). Its medial surface 



