Tibia.—The proximal end of the tibia is very large, with massive rugosities for muscular attachment. The two proximal faces are subequal, slightly convex, and separated by a prominent spine, which is grooved at the top. The shaft is long, straight, and compressed antero-posteriorly; the anterior ridge on upper third is very high, and expands into the tuberosity, which is enormous; while on the posterior face is a deep fossa just below the head. The distal end of the shaft is remarkably small, with two concave faces—the internal the smallest—with a low oblique ridge dividing them. There is a prominent malleolus.
The fibula (which is a distinct bone) has a small proximal end, and expands slightly below, with a large external malleolus.
Measurements of Limbs.
| M. | |
| Femur, total length | ·420 |
| Femur, transverse diameter at distal end | ·098 |
| Tibia, length | ·310 |
| Tibia, transverse diameter, proximal articular face | ·090 |
| Tibia, transverse diameter, distal articular face | ·077 |
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 |