20 
ANNALS OF THE QUEENSLAND MUSEUM, No. 6 
measurement in the shaft. Were it not for this difference in pro- 
portions, I should not hesitate to attribute the bone to P. carbo, so 
close is the resemblance between them. Locality, Wurdumankula. 
A left femur of the same length, but rather slenderer and 
imperfect at both ends, in no important point differing from the 
preceding. Locality, the same. 
Proximal half of a left femur, capitum imperfect, in this 
the neck is shorter and the capitum larger than in P. carbo, there 
is also a difference in the sculpture of the bone on the outer surface 
behind the trochanter ; besides the depressions seen in P. carbo, 
there is a large and deep one distad of the rest on the edge of the 
postaxial side. Locality, the same. 
Nearly entire length of a left femur of the same dimensions 
as the first of this series, notable for the small extent but great 
depth of the hollow space usually occupied by the pneumatic 
foramen. Locality, Malkuni. (Plate VIII., fig. 1 A. B.) 
Nearly the whole length of a right femur, capitum and distal 
end imperfect, sculpture behind trochanter sharply defined, shorter 
but not less strong in the shaft than the first of the series. Locality, 
Lower Cooper. 
Proximal five- sixths of a right femur. In this the neck is 
narrow, long, and unusually straight sided. The whole is apparently 
too much shorter than the other femurs to be confidently referred 
to P. gregorii. Locality, Malkuni. 
Proximal five-sixths of a left femur, incapable of adding to 
our information. Locality, Malkuni. 
Tibia. — Proximal half of a right tibia (Plate VI., figs. 4 A, B). 
This bone yields satisfactory evidence that those of the preceding 
ones, which appeared to be almost referrible to P. carbo, were not 
derived from that species, unless, indeed, further evidence should 
establish the fact that P. carbo was in existence in company with 
species now extinct. 
From the figures given, it will be seen that in the present 
species the fibular crest or process (a) takes its origin much nearer 
to the proximal end than in P. carbo, is more incurved on its hinder 
edge, and consequently forms a deeper sulcus between it and the 
tibia proper. The anterior crest (b) is far less elongate. The 
whole articular surface is wider, although much shorter ; the 
anterior half of the double cavity (c) for the inner condyle of the 
femur is a circular and comparatively deep basin. Locality, 
Malkuni. 
Distal five-sixths of a left tibia (Plate VI., figs. 5 A, B.). The 
fibular process does not extend so low distad as in P. carbo, and 
subsides gradually instead of ending quite abruptly and forming a 
hook at its distal end. The bridge over the extensor com. dig. 
tendon is stronger, but the outlet over which it arches is less spacious. 
The inner malleolus is narrower, the sides of the outer one parallel. 
Locality, Lower Cooper. 
