Annals of the Transvaal Museum 
95 
The lateral border of the neck is slightly concave forwards. This border 
broadens out proximally into the broadly rounded upper anterior corner of 
the bone. The medial surface of the upper end is convex antero-posteriorly, 
but concave from above downwards. Its lateral surface is concave. The arti- 
culatio ileo-pubica is broad and slightly twisted. The upper anterior portion 
Text-fig. i. Outline of transverse section 
through left pubic neck of Eucneme- 
saurus fortis in the region of the 
proximal fracture (PL XI) . Seen from 
the distal end. The anterior border 
is above and the medial border on the 
left-hand side. Nat. size. The slight 
concavity in the lower border deepens 
rapidly towards the distal end. 
Text-fig. 2. Outline of transverse 
section through left pubic 
neck of Dromicosaurus gra- 
cilis near the upper end of 
the foramen obturatorium. 
Seen from the distal end. 
The anterior border is above 
and the medial border on the 
left-hand side. Nat. size. 
of the lateral border of the proximal surface is higher than that of the medial 
border, while the lower posterior portion of the lateral border, just before 
reaching the groove, is lower than the corresponding medial border. The 
processus subacetabularis is broken off through, the groove on the proximal 
surface. This groove has a depth of 1*5 cm. and does not reach the medial 
border. The medial border of the proximal surface is evenly convex, while 
the lateral border is slightly concave. One gets the impression from the 
proximal end that its posterior portion is slightly twisted to the lateral side. 
The fractured end of the processus subacetabularis shows a convex lateral 
and a slightly concave medial border. Taken generally, the section at this 
end is triangular. 
The distal end (text-figs. 3 and 4) is very much weathered. A portion of 
the rounded lateral side is still visible. Its breadth as preserved is proximally 
9 cm. and distally 7-5 cm. Its thickness is 3-5 cm. The greatest breadth of 
the distal surface as preserved is 4-5 cm. The medial -hinder-lateral border of 
the distal surface forms practically half a circle. Its front border is straight. 
The distal surface makes an acute angle with the anterior surface. I wish to 
lay stress on the fact that the anterior surface is the only one which is not 
weathered. 
Femur. 
Only the proximal half of the left femur is preserved (PI. XII, fig. 1 and 
text -fig. 5). The piece is broken off through the trochanter quartus. The 
7—2 
