140 
Annals of the Transvaal Museum 
3-2 cm., distal posterior breadth 2-8 cm., distal anterior breadth i-6 cm., distal 
thickness 2-4 cm. The contour of the proximal articulation surface is trape- 
zoidal. The posterior border is much higher than the anterior one. The lateral 
side of the articulation surface is deeper than the medial side. The distal end 
is greatly twisted to the medial side. The contour of the distal end is also 
trapezoidal. It is not symmetrical. The articulation surface passes higher 
upwards posteriorly than anteriorly and its medial side projects further back- 
wards. The collateral pits are large. 
Another phalanx is the first of the second right toe. It is a first phalanx 
because of its evenly concave proximal articulation surface. It is one of the 
right side because the lateral portion of its distal articulation surface projects 
further downwards. It cannot be the first phalanx of the first toe, because of 
the pit on the distal end of the anterior surface and because of the depth of 
this pit and the thickness of the proximal end as compared with the proximal 
breadth. I take it to be the first phalanx of the second toe. Length 5-5 cm., 
proximal breadth 3-7 cm., proximal thickness 3*5 cm., distal posterior breadth 
3-4 cm., distal anterior breadth 2-4 cm. and distal thickness 2-5 cm. The axis 
of the practically cylindrical proximal articulation surface is not parallel with 
the hinder border of this surface, but converges with it towards the lateral 
side. This means that the bone is slightly turned to the medial side, when 
it occupies its natural position. The medial portion of the pulley-shaped distal 
articulation surface projects further backwards than the lateral portion. 
Results. 
The main results from the preceding work are here enumerated : 
1. Two new genera of the Theropoda have been described. 
2. Another form has been doubtfully referred to a very little known 
species. 
3. A redescription is given of Gryponyx transvaalensis Broom. 
4. A remarkable difference has been found between the pubic neck of the 
Plateosaurid Eucnemesaurus and that of the Anchisaurid Dromicosaurus. It 
could not be ascertained whether this difference is of family value. 
5. The femur of Eucnemesaurus disproves the generality of the rule that 
Theropod limb-bones are hollow. Perhaps this rule should be restricted to 
Anchisaurids. 
6. v. Huene draws attention to the peculiar shape of the distal end of 
the tibia of Euskelesaurus and of Gresslyosaurus. Both these tibiae differ from 
all other Theropoda . It has now been shown that the published figures of 
the tibia of Gresslyosaurus agree with the tibia of all other Theropoda, but 
disagree with the accompanying description. 
7. The Anchisaurid Dromicosaurus is shown to have distally coalesced 
pubes, a fact hitherto regarded typical of the Plateosauridae. 
8 . A great difference is shown to exist between the ischium of the Anchi- 
saurid Dromicosaurus and that of the Plateosaurid Teratosaurus. Could this 
difference be of family value? 
9. Another great difference is pointed out between the Anchisaurid 
Dromicosaurus and Plateosaurus Quenstedti. Could this also be of family 
value? 
10. What has been accepted to be the left lower arm of European Plateo- 
saurids is shown to be really the right lower arm. 
