no 
Annals of the Transvaal Museum 
below three-fifths of the length of the bone. The trochanter major does not 
lie on the top of the ridge, but is situated on its lateral side. Immediately 
below and medial to the lower end of the trochanter major the top of the ridge 
shows a broad, flat, rough surface. Lower down the top of the ridge is rounded 
and rough, the roughness narrowing down towards the middle of the bone, 
where it disappears. The surface of the bone enclosed between the medial 
side and the ridge, as far down as the upper end of the trochanter quartus, 
is concave. The lateral side of the anterior surface of the bone, below the 
lower end of the trochanter major and exactly opposite the whole length of 
the trochanter quartus, is slightly concave. A large oval foramen nutritivum, 
length 8 mm., breadth 4 mm., is situated on the lateral side of the top of the 
ridge and still within the rough surface, at a distance of 11 cm. from the upper 
end of the trochanter major. The medial side of the proximal end is hollow. 
This concavity, with the curve in the ridge and the convexity of the lateral 
side, marks the inward bend of the proximal end of the femur. The hinder 
surface of the proximal end is flat. Opposite the upper end of the trochanter 
quartus it rounds off over the lateral side of the bone into the anterior surface. 
Higher up, however, from opposite the middle of the trochanter major up to 
the proximal end of the lateral side, it rounds off into an elongated, flattish, 
lateral surface. This lateral surface is separated from the anterior surface by 
a heightened narrow ridge. 
The trochanter quartus begins at a distance of about 14-5 cm. from the 
proximal end of the bone. It 
terminates at a distance of about 
21-5 cm. from that end. The height 
of the trochanter, as preserved, is 
3 cm. Its upper edge is broken off 
and at the most it could have been 
0-5 cm. higher. The medial side of 
the trochanter is overhanging; the 
lower end of the lateral side is steep, 
but the slope of its upper end is 
much less. These two portions of 
the lateral side meet in a clearly 
visible rounded ridge, which runs in 
the direction of the upper outer cor- 
ner of the proximal end and seems Text-fig. 15. Dromicosaurus graphs. Left 
^ femur. Outline of distal end seen from 
below. Medial side to the right. 
to continue further upwards than 
the much higher medial ridge of the 
trochanter. The whole trochanter is situated nearer to the medial than to the 
lateral side of the bone ; moreover, the upper end lies nearer to the medial side 
than the lower end and therefore the edge of the trochanter lies in the direction 
of the condylus lateralis. Medially to the trochanter quartus there is a large, 
flat, rough surface, which has apparently served for the attachment of muscles. 
It looks mostly inwards and only slightly backwards. A ridge starts at the 
upper end of this surface, and runs from the lateral side on to the posterior 
surface in the direction of the lateral corner of the proximal end, passing 
well above the upper end of the trochanter quartus, where it terminates. The 
breadth of the diaphysis over the trochanter quartus is 6-5 cm. Its thickness, 
measured from the top of the lower end of the trochanter to the top of the 
ridge on the anterior surface, just above the foramen nutritivum, is 8*5 cm. 
At about 18 cm. above the distal end these dimensions are 7-5 cm. and 3-5 cm. 
respectively. The thickness of the distal end, measured from the anterior 
