The _humerus_ is represented by proximal and distal extremities. The latter presents the same characters on a smaller scale as in _P. major_. Upon the proximal end there is a deep bicipital groove. The greater tuberosity has a hooked anterior projection, and runs back into a ridge behind. (See Fig 7, Plate III.) The proximal end of the _ulna_ (of median breadth anteriorly) narrows into a prominent ridge behind. This gives a trihedral character to the shaft. This is persistent, but is less marked as the fore-and-aft diameter decreases. The remaining features of note are a high tuberous olecranon expanding behind; a shallow sigmoid, divided by a deep fossa into two long divergent articular faces; a trihedral shaft tapering slightly, but distinct from the radius; a narrow distal extremity, with a small irregular face for the cuneiform. The _radius_ has a rather short shaft, curved forwards, expanding below, and placed immediately in front of the ulna. A strong ridge runs from the external tuberosity up the posterior face of the shaft, disappearing two inches from the top. The proximal end, fitting against the ulna by two small faces, forms the greater part of the elbow-joint, a strong median ridge dividing the proximal face into two subequal surfaces with well-raised borders. The distal end of the shaft is rugose, and more prominent than the proximal. It has an oblong transverse face, which is slightly concave fore and aft. The position of the radius, immediately in front of the ulna, and its manner of articulation, remove any possibility of rotation, a feature in strong contrast with what we should expect from the character of the head. _Measurements of Ulna and Radius._ M. Ulna, length, excluding olecranon ·224 Ulna, length of olecranon ·080 Ulna, transverse diameter, proximal surfaces ·041 Ulna, diameter of shaft at median line ·038 Ulna, fore-and-aft diameter, distal face ·025 Ulna, transverse diameter, distal face ·017 Radius, proximal face, transverse ·048 Radius, proximal lace, fore-and-aft ·030 Radius, median diameter, shaft ·019 Radius, median diameter distal face, transverse ·043 Radius, median diameter distal face, fore-and-aft ·016 The _manus_ is described from the third and fourth metatarsals, with three phalanges. The metatarsals are short, with a wide, stout shaft, flat in front and slightly arched forwards behind. The proximal ends unite and form a continuous articular face, concave from side to side; while upon the exposed sides are smooth facets, indicating the presence of two additional toes of less size. (See Plate III.) The convex distal faces are marked behind by a slight groove.