158 Proceedings of the Royal Society of Victoria. 



pick ; however, as all the fragments appeared to belong to the one 

 bone, an endeavour was made by Mr. T. S. Hall and myself to 

 piece them together, which was, we were glad to find, eventually 

 successful. This proved to be the tibia of the gigantic extinct 

 kangaroo, for which the genus Palorchestes was founded by Sir 

 Richard Owen. The first specimen which came under the notice 

 of that distinguished authority, was a portion of a skull 

 discovered in 1851, by Dr. Ludwig Becker, "in a bed of yellowish 

 sand and clay, mixed with very small shells, in the Province of 

 Victoria, Australia." 



A fragment eight and a half inches in length of the proximal 

 end of a tibia, referred to this genus, is described and figured 

 in the Philosophical Transactions,* and in Owen's " Fossil 

 Mammals of Austi'alia," p. 495, pi. cxxxi., and with this as far 

 as it goes our example agrees accurately, the latter, however, is 

 quite twenty-four inches in length, and is about five inches in 

 circumfei'ence at its narrowest part. I refer this example to the 

 above species with but little doubt, as it is the type and only 

 species of the genus, and Mr. R. Lydekker saysf it " is the largest 

 known member of the family ( MacrflpodidiC ), the length of the 

 entire cranium being estimated at sixteen inches," and on account 

 of the very large size of the skull he further remarks! that this 

 " indicates that the largest limb bones pi'obably belongs to that 

 genus." 



Judging from the specimens recorded by Sir R. Owen in the 

 works cited above, and by R. Lydekker, in the British Museum 

 Catalogue,!:$ we are fortunate in possessing such a fine example 

 of this bone. 



The exact locality from which the above bones have been 

 procured was given me by Mr. C. E. Oliver, and is the Werribee 

 Sewage Farm, 2 miles 39 chains 87 links on drain bo east, 3 feet 

 below the surface in a slightly calcareous red sandy clay. 



Both specimens are now in the Biological Museum at the 

 University. 



» Pldl. Trans., 187C, p. 203, pi. xxiv. X Op. cil., p. 239. 



t Brit. Mu3. Cat. Fossil Mammalia, i art v., p. 237. J Op. cil., p. 244. 



