Batesford Limestone. 267 



From its proximity to the ofranite of the Dog Rocks, it is 

 probable that this series immediately overlies it. Indeed, the 

 evidence sriven me by Mr. McCann strongly points in that 

 direction, for he says that the basal portion of the limestone is 

 rendered so impure and "" clinkery " by the included fragments 

 of granite as to be useless for calcining. 



As Messrs. Hall and Pritchard imply by their observations, the 

 polyzoal rock forms a continuous series with the lower, Lepidocy- 

 clina limestone, since '" similar foraminifera " occur " freely 

 scattered through it, though its great bulk consists of polyzoa 

 and spines and plates of echinoderms, together with a few 

 lamellibranch shells." Evidence of a sudden change of the 

 local conditions is seen in the sharp transition from polyzoal 

 limestone to yellow clay : yet, as the above authors point out, 

 the fossils of the former rock persist in the clay deposit for the 

 first few feet, when they appear to be extinguished by turbid 

 water conditions. 



The only other known locality in Victoria which affords a similar 

 instance of the occurrence of a Tjepidocyclina limestone is 

 Green Gully, Keilor, noticed by Messrs. Hall and Pritchard in 

 their paper, " A Contribution to Our Knowledge of the Ter- 

 tiaries in the Neighbourhood of Melbourne.''! This limestone 

 is of a pale yellow colour, and contains one of the two species 

 of Lepidoryrlina found in the Batesford limestone, as well as 

 the characteristic Gyp.-iina Jiowchini found in that rock. The 

 Keilor rock shows a great lithological variability, since, in close 

 proximity, this limestone is replaced by a calcareous grit, still, 

 however, containing the tests of Lepidocyclina, intermingled 

 with echinoid spines and polyzoa. The beds at this exposure are 

 20 feet in thickness, and rest on the older volcanic series. 



The Foraminifera and Ostkacoda; Description of 

 New Species and Notes on the more Important Forms, 



The groups of the foraminifera and ostracoda have not been 

 systematically worked out for the Batesford Limestone series ; 

 hence they are dealt with here in some detail. The list of 

 identifications of foraminifera from these beds by Mr. nowchin 



1 Proc. Roy. Soc. Vict., vol. ix., ii.s., 1897, p. 211. 



