Annals of the Transvaal Museum 
ioi 
tibia of Euskelesaurus Browni also occurs in Gresslyosaurus robustus of Beben- 
hausen near Tubingen. The distal end of the tibia of Gresslyosaurus robustus 
is figured and described on pp. 134 and 135 of v. Huene’s great work on 
European Dinosaurs ( 5 ). In the explanation of fig. 133 it is stated that the 
lower border of the figure corresponds with the anterior border of the distal 
end ; this lower border, however, is much longer than the upper border, which 
would then correspond with the posterior border of the distal end. According 
to this figure, therefore, the anterior border of the distal end would be longer 
than the posterior border, as in all other Triassic Theropoda. Again, the ex- 
planation of fig. 134 states that the figure gives a postero-lateral view of the 
same distal end. From this figure it is apparent that the lateral end of the 
processus anterior is higher than that of the processus posterior and that both 
these processes correspond with the anterior and posterior border respectively 
of fig. 133. Now, if one compares the plate figure of this distal end on PI. LIV, 
which is given in front view, with the text-figures, it will be found that the 
processus anterior is identical with the processus anterior of the text-figures, 
further that the processus posterior projects further downwards than the pro- 
cessus anterior and that the whole posterior breadth of the bone is hidden 
behind the anterior breadth. The three figures are therefore identical among 
themselves and they show the same build of the distal end of the tibia as in 
all other Triassic Theropoda. The description in the text, however, is quite 
different. It is stated, that the posterior medial angle of the distal end is 
acute and projects further to the medial side than the anterior angle; in the 
figure, however, the posterior medial angle is obtuse, while the anterior one 
is acute and projects further to the medial side. It is also stated in the text 
that the hinder convex border has a length of 15-5 cm. However, the con- 
vexity and the dimension correspond with the anterior border of the figures. 
As the figures correspond with the general build of the distal end of the tibia 
in Theropodous Dinosaurs, I can only conclude that some mistake must have 
entered into the description. 
A comparison with Gryponyx africanus as described by Broom ( 7 ) is very 
difficult. It is of the greatest importance to compare the proximal end of the 
pubis of our form with that of Gryponyx, especially with regard to the shape 
of the neck, but from the description it is quite impossible to do so, for Dr 
Broom only states that “The upper end of the pubis is large and fairly flat/' 
and “It has a large nearly round pubic foramen.” Mr S. H. Haughton of 
Cape Town, however, has very kindly furnished me with the necessary in- 
formation. It appears that the pubic neck of Gryponyx africanus is very 
broad and flat, being nearly three times as broad as thick. Another very 
desirable comparison is that of the tibiae. The tibia of our form is typically 
Plateosaurid. This is especially shown by the shape of the head. Dr Broom 
describes the tibia of Gryponyx africanus as follows: “The tibia has a larger 
head than appears to be the case in Plateosaurus, but otherwise presents no 
special interesting features. The total length of the bone is 447 mm. and the 
proximal end measures 163 mm. by 71 mm.” That is all. Nothing about the 
shape of the proximal nor of the distal end. Only a few measurements to work 
with. It appears that our tibia is 1-3 cm. longer. Its head however is 3 cm. 
longer and 6 cm. broader. Therefore the tibia of our form has a very much 
larger head than that of Gryponyx africanus. A figure of the tibia of Gryponyx 
africanus has been given ( 7 , PI. XIV, fig. 4) and in the explanation this is 
called an “outer view of left tibia.” In an outer view the sulcus malleoli 
should be visible. It is, however, not shown in the figure. It would be re- 
markable if this tibia did not possess such a sulcus. There is, however, no 
