Victorian Fossils, Part XXI. 85 



and small size. The build of both S.carreti, Du Bus (Antwerp Crag) 

 and S.macgeei, Chapni. (Beaumaris), is heavy, and the form of the 

 teeth broadly conical. The present tooth of S.lodgei is that of a 

 mature individual, and it does not in any of its characters suggest 

 specific affinity with the Beaumaris species. As in S.lodgei, the 

 Belgian species has the enamel of the crown longitudinally striated, 

 whereas in S.macgeei the enamel is not only rugosely striated, but 

 beaded or crenulate. 



Occurrence. — Balcombian or Oligocene. Muddy Creek (Clifton 

 Bank), near Hamilton, Victoria. 



This tooth (holotype) was discovered by the late Mr. H. Lodge, of 

 Hamilton, and we are indebted to Mr. F. P. Spry for presenting 

 this interesting specimen to the National Museum. 



Note. — According to the label, it was found at " ]Muddy Creek, 

 near Hamilton." Since the locality is often used in a general vsense 

 by collectors for several geological exposures in the district, includ- 

 ing the Kalimnan of the Grange Burn, it suggested the possibility 

 of the tooth having come from the latter locality. However, this 

 doubt is removed by an examination of the material enclosed in the 

 pulp cavity of the tooth, which contained typical upper Clifton Bank 

 foraminiferal sand with shells of the pteropod VagineUa, and rolled 

 and wnnd-polished Aitiphistegiiiae. It is, therefore, conclusive that 

 the tooth w^as found in VagineUa band at Clifton Bank, which 

 includes the higher Balcombian horizon merging on the Janjukian 

 bed represented in the Grange Burn area by red limestone. i 



Sub-fam. Ziphiinae. 



Genus Mesoplodon, Gervais.'- 



Meso2'>lodon compressim, Huxley sp. (Plate IV., Figs. 1-4 ; Plate V., 

 Fig.s. 7-11). 



Belemnoziphius compressus, Huxley, 1864, Quart. Journ. Geol. 

 Soc, vol. XX. p. 388, pi. XIX. 



Ziphius compressus, Owen, 1870, Crag Cetacea, No. i (Ziphius), 

 Mon. Pal Soc, vol. XXIIT. p. 25; pi. V.. fig. .-?. 



Mesoplodon coinpressiis, Huxley sp., Lydekker, 1887, Cat. Foss. 

 Mammalia, Brit. ]\Ius., pt. V., p. 7-3. Woodward and Sherborn, 

 1890, Cat. Brit. Foss, Vertebrata, p. 363. 



1 See Mem. Nat. Hus. Melbourne, No. .'5, 1914, p. 44, fig-. 14. 



2 For notes on the validity of this generic term see Flower, W. H., Trans. Zool. Sof.. \ol. 

 i., 1?7'2, p. 2C8, footnote 3, and Idem, ibid., vol. x., 1878, p. 434. 



