Annals of the Transvaal Museum 
103 
weathered, but it is still plainly visible that the groove for the claw on the 
right side lies slightly deeper than that on the left. There is a broad ridge on 
each side below this groove. The highest part of this ridge on the right side 
lies so far below its middle line, that it forms a fairly sharp lower edge to the 
right side of the bone. The highest part of the ridge on the left side .of the bone 
follows the middle line of the ridge. The ridge on the right side passes further 
backwards than that on the left. There is a broad, thick, boss in front of the 
middle of the articulation surface on the left side. That on the right side is 
broken away. This boss is separated from the ridge in front of it by a broad 
groove, which passes downwards and then backwards above the tuberositas 
for the flexor tendon ; upwards the groove is continuous with the groove for 
the claw. The greater part of the tuberositas for the flexor tendon is broken 
away. The articulation surface has completely disappeared by weathering. 
If compared with the clawphalanx of the first finger of Massospondylus 
Browni described hereafter, it will be noticed that what is called here right 
and left corresponds with medial and lateral respectively there. This therefore 
means, that the claw is not of the right manus as stated in the original descrip- 
tion, but of the left. I do not think that it belongs to the same species as 
Massospondylus Browni, because the proximal end of the lateral side ridge 
lies relatively much higher, with regard to that of the medial side, than the 
proximal end of the lateral side ridge in Massospondylus Browni. Whethet it 
belongs to the genus Gryponyx I am unable to say at present. Dr Broom 
mentions “the vascular groove” and one is led to believe that only one such 
groove is present. This, however, is not so, for although the medial side of 
the bone is weathered, one can still distinctly trace the groove on that side. 
In the description of Gryponyx africanus ( 7 , p. 296) Dr Broom states of the 
clawphalanx of the first finger: “On the radial side is a marked vascular 
groove.” As the statement stands, one concludes that such a groove is not 
present on the “ulnar side.” However, I very much doubt the truth of such 
a conclusion and until it is contradicted I will accept Gryponyx africanus to 
have a clawphalanx of the first finger with two grooves for the claw, as in all 
other Triassic Theropoda. 
The distal end of the metatarsale has been described as that of the second 
bone of the right foot. The breadth of the distal end is 3-8 cm. and its thick- 
ness 2-4 cm. The medial end of the axis of the articulation surface is slightly 
higher than its lateral end. The middle of the posterior surface immediately 
above the articulation surface is concave. Laterally it is bordered by a ridge, 
which runs upwards from the lateral lower corner of the surface and practi- 
cally parallel to the lateral side. The medial posterior process of the distal 
end is short and directed about just as much outwards as inwards. The 
anterior surface shows a slight thickening above the middle of the articulation 
surface, bounded above by a very shallow, half-moon shaped concavity. On 
the lateral border of the anterior surface this concavity is bounded by a broad 
low boss, which forms at the same time the upper anterior knob-like process 
of the border of the lateral collateral pit. This pit has an upper, a lower and 
an anterior outlet. The section at the fractured end is broad laterally and 
narrow medially. Some of the characters of the bone, as for example the ridge 
on the posterior surface and the section of the shaft, point to a second metatar- 
sale, but others, as for example those of the anterior surface, point to a third 
metatarsale. At present I am unable to decide the point. 
Dromicosaurus gracilis n.g. et sp. 
The following remains were collected by myself from the Red Beds of 
