80 
Annals oe the Transvaal Museum. 
the questionable sacral mass, which might be an ulna, but which is so 
disfigured through fossilization that it cannot be identified. 
The Humerus —I have nothing to add from the present specimens 
to the description of the humerus of Dicynodon pardiceps in 1, p. 43, 
PL XLI and XLIL Fossilization has coalesced some other bones, pro- 
bably ribs, to the distal part of the right humerus. 
Dimensions : 
Length of right humerus 195 mm. 
Breadth of distal end of left humerus, more than. 115 mm. 
(Part of the radial side is broken off.) 
Breadth of the proximal end of the right humerus 80 mm. 
The Pelvis. 
Only the two ilia have been found. The left ilium is lying with its 
outside up, while the right shows its inner surface (PI. XI). The outer 
surface is slightly concave and the inner surface slightly convex. The 
bone consists of two parts, the acetabular portion being small and thick, 
the other large and flat. The flat part has the shape of an oblique segment 
of an ellipse, the acetabular portion uniting witJr it mainly behind the 
middle of the straight line. The angle between the lower edge of the flat 
portion and the front surface of the acetabular connection is obtuse, the 
angle between this edge and the hinder surface being acute. The upper 
edge of the bone is notched in different places, but I am not sure about 
the number of notches. Watson mentions three notches in the ilium 
of latirostris (3, p. 291), but the present species seems to have five notches 
in the upper edge of the bone. The ie±t ilium is the only one to give 
evidence on this point, as the fore-end of the right one is broken off. As 
in latirostris, there are two deep notches opposite the acetabulum. There 
is a much smaller notch about half-way between the hindmost of the two 
large ones and the hinder end of the bone. There is probably another 
notch a little further than the distance between the two large notches 
forward. This part of the right ilium is damaged and the left one shows 
at this spot a hole at a small distance from the edge. This hole must be 
the inner end of a notch, of which the outer end has been covered by sub- 
stance of some other bone. This kind of deformation is present in more 
parts of the fossil. As already stated, ribs have coalesced with the right 
humerus in such a way as to make the distal part of this bone practically 
unrecognisable. There is still another small notch a little further forwards. 
The inner surface of the ilium shows two depressions, situated near 
the front part of the junction of the acetabular with the flat portion. 
These depressions are divided by a short narrow ridge, while the hinder 
border of the hindmost of the two is formed by an identical ridge. Down- 
wards they are bordered by the vertical edge of the general surface ; 
upwards they are not demarcated from this surface. Behind these two 
there are two other depressions, which are much shallower and much less 
conspicuous. The distal ends of the sacral ribs were lodged in these 
cavities and it is clear that two of them, presumably the first two, formed 
a much firmer connection with the ilium than the rest. 
The acetabular portion is a little longer than broad, while its height 
