Annals of the Transvaal Museum 
137 
saurus capensis Lydekker sp. is based on a fragment of a tibia, which is 
crushed and flattened out of recognition. Nobody will ever be able to prove 
that this species differs from Euskelesaurus Browni. The only result of such 
work can be, that science is for ever burdened by meaningless names and 
synonyms. 
With regard to the affinities of this specimen, it will be clear from the 
different ilea that it does not belong to Gryponyx. 
Comparison with Massospondylus carinatus shows immediately that its 
ileum has practically the same shape as that of our form. Length and height 
of the bone in our form are 20 cm. and 13 cm. and in Massospondylus carinatus 
22 cm. and about 14 cm. The relations in the two bones are therefore also 
practically the same. Our individual may, however, have been slightly 
smaller. Pubis and ischium of our specimen are too much damaged to allow 
of comparison with those bones of Massospondylus carinatus. The femur 
portion below the trochanter quartus in Massospondylus carinatus measures 
about 22 cm. and the distance of its trochanter major below the proximal 
end is 9 cm. In the femur of our specimen these distances are 18-5 cm. and 
6*2 cm. Relatively, therefore, the trochanter major lies considerably higher 
in our form than in Massospondylus carinatus. The tibia of the present 
specimen is too much crushed to be used in a comparison. The humerus of 
Massospondylus carinatus is only known from fragments, and radius and ulna 
are altogether unknown. Metacarpale I of Massospondylus carinatus is rela- 
tively slightly broader than that of our form. The first phalanx of the second 
finger is proportionately longer than in our form and the fifth metacarpale is 
proportionately broader. The first phalanx of the second toe of Massospon- 
dylus carinatus has the same length as that of our form but is much broader. 
Comparison with Massospondylus Harriesi ( 7 , p. 299). The humerus of 
this type seems to be slightly longer than that of our specimen. At any rate, 
the distance from the lower end of the pectoral ridge to the furthest part of 
the distal end is 12-5 cm. in Massospondylus Harriesi, whereas it is 11*5 cm. 
in our form (11 cm. up to the distal end of the condylus lateralis). Radius 
and ulna of Massospondylus Harriesi, however, are both slightly shorter than 
in our form. The first metacarpale of our form is absolutely longer and narrower 
than that of Massospondylus Harriesi: In Massospondylus Harriesi the first 
phalanx of the first digit is longer than its metacarpale, in our form this is 
the reverse. The first claw of Massospondylus Harriesi is longer than that of 
our form. There are numerous small differences in the other phalanges of the 
hand. The distal portion of the femur of Massospondylus Harriesi, measured 
from the lower end of the trochanter quartus, is 15-5 cm. In our form this 
portion measures 18-5 cm. The metatarsalia of Massospondylus Harriesi are 
all shorter than those of the present specimen, but where metatarsale I is 
more than 6 mm. shorter, metatarsale II is only 2 mm. and metatarsale III 
only 1 mm. shorter. The relations are therefore different. All the phalanges 
of the foot of our form are longer than those of Massospondylus Harriesi, but 
•also relatively more slender. 
The relations of the humerus of Aetonyx palustris are practically the same 
as in our form, but the radius is relatively smaller. Relative to the first 
metacarpale, the first claw of Aetonyx palustris is much longer than in our 
form (the distal width of the first metacarpale as given by Broom ( 7 , p. 305, 
PI. XV, fig. 12)). In Aetonyx palustris the first metacarpale is practically as 
broad as long; in our form the breadth is much less than the length. In 
Aetonyx palustris the second phalanx of the second finger is longer than the 
first and the third phalanx of the third finger is longer than the second. 
