6 
There are other minor differences; but the above-defined patent ones sufficiently 
establish the fact of a nearer resemblance in the tibia, as in the femur, of the gigantic 
wingless bird of Australia to the genera still there represented (Dromaius and Casua- 
rius), than to Dinornis, Apteryx, or Struthio, 
The following are comparative admeasurements ;— 
Dromornis SORTED Struthio 
m4 ~ (elephantopus). : 
Transverse breadth of the shaft of the tibia at in, lines. in. lines. in, lines. 
the commencement of the distal expansion. 2 2 2 3 1 £ 
Ditto ditto distal condyles . 3 £95 4 0 2 9 
The fossil above described is in a more mineralized condition, consequently of greater 
specific gravity, than any bone of Dinornis which I have hitherto received. It is sup- 
posed to have come from a cave in Mount Gambier, South Australia; but I can only 
speak with certainty as to the locality, not as to the circumstances of its discovery. 
One cannot, of course, state confidently that it is a bone of the same species of bird as 
the mutilated femur from the Cave of Wellington Valley}, or of that from the drift at 
Peak Downs, in Queensland °. 
But the relation of size to these bones, and the difference of proportion to the tibia of 
Dinornis exemplified in the above-given admeasurements, oppose no obstacle to the 
reference, rather support it, and bear out the inference deduced from the femur. 
The third evidence of Dromornis is a portion of the pelvis, 54 inches by 43 inches in 
size, including the left acetabulum. It was disinterred from a depth of 200 feet at the 
‘Canadian Gold Lead,’ in New South Wales, and was kindly transmitted to me by the 
Rev. W. B. Clarke, M.A., F.R.S. I have minutely compared this fragment with the 
answerable part of the pelvis in other birds. It differs least, save in size, from that 
part in Dromaius. From the species of Dinornis (D. elephantopus and D. robustus) the 
pelvis of which is about the size of that yielding the portion in question, I note the 
following differences:—The acetabular outlet has a more circular form in Dromornis ; 
the acetabular origin, or base of the pubis, is longer, while that of the ischium is 
shorter. The following are admeasuremen ts :-— 
Dromornis australis. Dinornis robustus. 
in, lines, in. lines, 
Acetabulum, vertical diameter 2 10 2 9 
Acetabulum, transverse diameter 2 dil 2 6 
Pubis, extent of preserved base . 3 0 2 0 
Ischium, from lower border of base to ries 3 10 4 0 
Dromornis had an extensive range in Australia. It has left remains in Wellington 
1 Mitchell’s ‘Three Expeditions into the Interior of Eastern Australia,’ Syo, ‘ Paleontological Appendix,” 
pl, 32. figs, 12, 13 (1838). i 
* Trans. Zool, Soc. yol. viii. p. 384 (1872), 
