The _pelvis_ is described from the right and left ilia, which are broken as they expand towards the crest; the acetabulum is fragmentary, but all the parts remain. The ischium and pubis are only represented by fragments. As figured in Plate V., the acetabulum is restored from a somewhat smaller specimen. The most striking feature of the _ilium_ is the long and somewhat constricted neck. The acetabular border is long and curved forward, thinning gradually as it approaches the crest; and marked on the iliac surface, near the acetabulum, by a slight rugosity for the rectus muscle. The ischial border, while less arched, is probably longer; and the sacral surface, distinctly defined, indicates that the rounded upper border of the ilium rarely reached above the sacral spines. There is a deep groove between the ischial and pubic borders, the latter disappearing about half way up the iliac surface. The gluteal surface near the acetabulum is much depressed; above it expands into a broad, flat, thin plate. The _ischium_ has a stout neck and thick expansion below; the upper border is very heavy. From what remains of the _ischium_ and _pubis_ we can infer a large elliptical obturator foramen, a short pubic symphysis, a narrow and rather slight pubis, with a small nearly cylindrical neck. The acetabulum is deep, with a thick well-raised border, and a large, oblong, and very deep pit for the ligamentum teres. _Measurements of Pelvis._ M. Ilium, transverse diameter above acetabulum ·062 Ilium, long diameter (estimated) ·232 Acetabulum, greatest diameter ·050 Ischium, transverse diameter below acetabulum ·041 Pubis, diameter at obturator foramen ·035 The _tarsus_ is arranged in the usual Perissodactyle order. The _calcaneum_ is stout, of good length, tuberous, but not expanding much at the extremity; presenting two faces for the astragalus, of which the internal is the largest, and a large distal face for the cuboid. The _astragalus_ is wide, with less asymmetry in the two articular facets than is common. It articulates with both the cuboid and navicular. _Measurements of Tarsus._ M. Astragalus, total width, tibial facets ·048 Astragalus, total length ·056 Astragalus, length, navicular facet ·046 Astragalus, width, navicular facet ·035 Calcaneum, total length ·120 Calcaneum, total breadth ·057 Calcaneum, length of tuber calcis ·050 All the above were found at Henry's Fork Divide. In another locality, in connection with a fine head of _P. major_, was found the lower half of a _humerus_.