280 Frederick Chapman : 



Polymorphina comjjressa, d'Orbigny. 



P. compressa, d'Orbigny, 1846, Foram. Foss. Vienna, p. 233, 



pi. XII., Figs, 32-34. P. lactea, var. oblonga, Williamson, 



1858, Rec. Foram. Gt. Brit., p. 71, pi. VI., Fig. 149, 



149a. 



A variety with a granulosa surface occurs in the limestone 



of the Filter Quarries. Howchin records this species from the 



upper beds of Muddy Creek (Kalimnan). 



Polyworphina ohlonga, d'Orbigny. 



P. ohlonya, d'Orbigny, 1846, Foram. Foss. Vienne, p. 232, pi. 

 XII., Figs, 29-31. 



Recorded by Howchin from both series at Muddy Creek. 

 Not uncommon in the Filter -Quarries. 



PolytnorpJiina elegantissima, Parker and Jones. 



P. elegantissima, Parker and Jones, 1864, Phil. Trans., vol. 

 CLV., Table X., p. 438, Brady and Jones, 1870, Linn. 

 Soc. Lond., vol. XXVIL, p. 231. pi. XL., Fig. 15. H. B. 

 Brady, 1884, Rep. Chalk, vol. IX., p. 566, pi. LXIL, Figs. 

 12-15. Chapman, 1907, Journ. Quekett Micr. Club, p. 

 132, pi. X., Fig. 3. 



This species is a common form in the Victorian tertiaries, and 

 has been recorded by Howchin from both series of strata at 

 Muddy Creek. The examples from the L^'pidocyclind' rock of the 

 Filter Quarries at Batesford show a wide range of variation, 

 from the broad, triangular form to the slender, elongate variety ; 

 and all showing the vertically elongated and sickle-ended seg- 

 ments typical of this species. As a living form it is remarkable 

 for its peculiarly Australian distribution, the only exceptional 

 localities being Raine Islet and Hong Kong Harbour. A closely 

 related, if not identical form, is P. prohlema, var. deltoidea, 

 Reuss, which occurs in the Septarian Clays (Oligocene) of Ger- 

 *many. 



