260 
PROFESSOR H. G. SEELEY ON THE STRUCTURE, ORGANIZATION, 
between the neck and the back, metapophyses appear to be developed. The zygapo- 
physes are strong, prominent, directed upward and outward ; they are separated by 
a deep notch. Below this notch is a strong, short, massive transverse pi’ocess which is 
rounded superiorly, and to tliese processes I suppose the ribs to have been attached, 
though they are now displaced to a lower level. There is no indication of the base of 
the centrum, but, as the vertebral column is nearly straight, and the vertebrae vertical, 
they may be presumed to have the base flattened. The seven dorsal ribs are each 
about ] 4 centims. long, rather slender, curved, contracting at the abdominal end to 
about half the diameter, rounded on the under side, flattened above with a slight ridge 
on the posterior raai-gin, which makes the side of the rib slightly concave. The last 
rib but one shows, apparently, the expanded articular end. It is concave from above 
downward so as to overlap the rounded transverse process, and the superior process of 
the rib appears to be perforated by a foramen. The depth of the articular end is 7 mm. 
The distal end of the femur apparently, with its (?) proximal end seen at one 
extremity of the slab, would show the bone to be 11 centims. long. The shaft expands 
towards the distal end, where it is about 3‘5 centims, wide, convex transversely on the 
superior side, with the articulation moderately rounded downward and backward, though 
the distal end is imperfectly exposed. The left humerus is short, about 5'5 centims. 
long, and broadly expanded at both proximal and distal ends, which are nearly at right 
angles to each other. The proximal end is about 4‘5 centinrs. wide, with the articular 
surface extended transversely as in most Anomodonts, and a small but prominent 
rounded tuberosity in the middle of the superior margin. The radial margin of the 
proximal end is produced outward as a thin process more proximal in position than is 
usual. At 2 centims. below the proximal articulation, and well above the middle 
of the bone, is a large foramen on the I’adial side in the cast, about 7 mm. in diameter, 
but it is caused by a boss of phosphatic matter which adheres to the slab. The distal 
expansion of the humerus begins at a little more than 1 centim. below the proximal 
articulation, and it evidently developed a strong process on the external side, which is 
broken av/ay, for the fractured suiTace is nearly 3 centims. long and about half as 
wide. The distal end was evidently compressed laterally on the Anomodont plan, 
but the articular surface is imperfectly exposed. 
The radius and ulna cross each other, so that the proximal end of the ulna is thrown 
behind the radius, which thus becomes partly exposed at its proximal end. The radius 
is the stronger bone, 2’3 centims. wide at the articulation, which is transversely 
truncated. Its dimensions become smaller as it extends distally. 
The ulna is 8'2 centims. long. It appeal’s to have a slight sigmoid flexure, inclining 
a little forward at the larger proximal end, which is fidly 2 centims. wide, and slightly 
backward at the distal end, which is about 12 milhms. wide. The external surface is 
somewhat flattened. There is a doubtful indication of an olecranon ossification. The 
distal end is rounded. The bone is much more slender than the large Dicynodont 
