Bdtesford Limestone. *^85 



Typical specimens are not uncommon in the foraminiferal 

 rock of the Filter Quarries. Howchin records this species from 

 the Kalimnan, near Adelaide, and the Balcombian of Muddy 

 Creek. 



Truncatulina variabilis, d'Orbigny. 



T. variabilis, d'Orbigny, 1826, Ann. Sci. Nat., vol. VII., p. l>79, 

 No. 8. Brady, 1884, Eep. Chall., vol. IX., p. 661, pi. 

 XCIIL, Figs. 6, 7. 



This wild-growing modification of the preceding species is 

 also moderately frequent in the limestone of the Filter Quarries. 

 Howchin records it from the Balcombian of Muddy Creek. 



Truncatulina tenuimargo, Brady. 



T. tenuimargo, Brady, 1884, Rep. Chall. vol. IX., p. 662, pi. 

 XCTIL, Figs. 2, 3. 



As a recent species this is frequently met with in Australian 

 seas. It does not appear to have been previously noticed as a 

 fossil form. A fine example from the Filter Quarries. 



Truncatulina wuellerstorfi, Schwager sp. 



Anomalina wuellerstorfi, Schwager, 1864, Novara-Exped., (reol. 

 Theil, vol. IL, p. 258, pi. VII., Figs. 105, 107. 



Rare in the limestone of the Filter Quarries. In the living 

 condition it is usually found in deep-water ooze. The original 

 specimens of Schwager's came from the Pliocene of Kar 

 Nikobar. 



Trunratiil ina ungeriana, d'Orbigny sp. 



Rotalina ungeriana, d'Orbigny, 1846, Foram. Foss. Vienne, p. 

 157, pi. VIII., Figs. 16-18. Truncatulina ungeriana, 

 d'Orb. sp., Brady, 1884, Rep. Chall., vol. IX., p. 664, pi. 

 XCIV., Figs. ^a-c. 



A moderately common form in the limestone of the Filter 

 Quarries. It is well distributed throughout the Victorian ter- 



