Annals of the Transvaal Museum 
131 
breadth about 2 cm. ; originally the breadth may have been greater than the 
height. The proximal surface is convex and forms an angle with the lateral 
side. The trochanter minor lies on the hinder surface at the border of the 
proximal surface and nearer to the medial end of the caput femoris than to 
the lateral side of the bone. The upper end of the trochanter major is broken 
off in both bones. It was situated at a distance of 6*2 cm. from the proximal 
end in the left femur; this distance is 5-5 cm. in the right bone. There is a 
broad, deep groove between the lateral side of the trochanter and the general 
surface of the bone. The height of the trochanter, as preserved in the left 
femur, is 9 cm. The lower end of the trochanter is not visible. Between its 
proximal end and the trochanter major the femur was broader and thinner 
than further downwards. Both bones are so badly crushed that nothing can 
be seen of the ridge, which in other femora runs from the trochanter major 
towards the condylus medialis. The lateral side of the proximal end is slightly 
convex and the medial side concave. Therefore the proximal end of the femur 
is slightly bent inwards. 
The trochanter quartus begins at a distance of 9 cm. from the proximal 
end in the right femur. This distance is 10 cm. in the left one. It terminates 
at a distance of 15-5 cm. in the right and 16-5 cm. in the left femur from the 
proximal end of the bone. This lower end lies at a distance of 18-5 cm. in the 
left and 19*5 cm. in the right bone from the distal end. The height of the 
trochanter is 2 cm. Its medial side is steep and its lateral side less so. The 
proximal end of the trochanter forms a very pronounced ridge ; a second ridge, 
medial to this first one, is only indicated by a slightly greater convexity of 
the lateral side of the trochanter. The trochanter is situated nearer to the 
medial than to the lateral side of the bone. Its lateral side is convex and its 
medial side concave. The fossa intercondyloidea begins at about 11 cm. above 
the distal end. Its upper end lies nearer to the medial than to the lateral side 
of the bone, and its lower end is slightly further away from the medial side. 
The condylus medialis has a breadth of 2-8 cm. in the left femur and a breadth 
of 2*4 cm. in the right one. In the right femur the condyles have been pressed 
very much to the medial side and flattened; in the left one they have been 
slightly pressed to the lateral side. The height of the condylus medialis is 
3-8 cm. It projects about 3 cm. from the bottom of the fossa intercondyloidea. 
The condylus lateralis has a breadth of 2-4 cm. in the right femur. Its height 
is about 3 -5 cm. and it projects about 2-5 cm. from the bottom of the fossa 
intercondyloidea. The breadth of the distal end of the bone is about 9 cm. 
in both femora. The distal articulation surface stands obliquely on the axis 
of the bone, that is to say, if this, surface is placed horizontally, then the axis 
of the bone is directed from below upwards and backwards. The anterior 
surface of the lower end is slightly concave. The lateral surface is hollow and 
the condylus lateralis stands out slightly to the lateral side. 
Tibia. 
Both tibiae are preserved, but in a very bad condition. The proximal end 
of the right tibia (PI. XX, fig. 3) is distorted and that of the left flattened to 
less than finger thickness. As preserved, the length of the bone is 30-5 cm. 
The head of the left tibia has now attained a length of about 12 cm. and a 
thickness of 1-3 cm. at its anterior end and of 3 cm. at its posterior end. The 
head of the right tibia has a length of 8-5 cm. measured from the hinder end 
of the condylus lateralis (!) to the anterior portion of the medial border. Its 
breadth is 5 cm. I give these measurements, which are of no value to our 
knowledge of the animal they belong to, for reasons which will be discussed 
