PELVIC LIMBS. 85 
and bears on its distal end the second metatarsal. It is not 
visible in ventral view. 
Medial Cuneiform. Entocunetform. Os cuneiforme primum 
BNA (Fig. 58, ¢).—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).—Metatarsals. 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 (1) 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 (¢). Distad of these facets is a rough ridge. 
The third (3). 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 (¢). 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 
