828 AUSTRALIAN FORAMINIFERA, I., 



Family ROTALID^. 

 Subfamily ROTALIN^. 



8. Truncatulina pr.ecincta, Karrer; C.R., pl.xcv. f.1-3. 



9. T. HUMiLis, Brady, C.R., pl.xciv. f.7. 



10. Anomalina foveolata, Brady, C.R., pl.xciv. f.l. 



Family NUMMULINID^. 

 Subfamily POLYSTOMELLIN^. 



11. PoLYSTOMELLA CRISPA, Linne; C.R., pl.cx. f.6-7. 



12. P. CRATicuLATA, Fichtel & Moll; C.R., pl.cx. f.16-17. 



13. P. MACELLA, Fichtel 6z Moll; C.R., pl.cx. f.8, 9, 11. 



14. P. STRiATOPUNCTATA, Fichtel tfe MoU; Flint, "Recent Forami- 



nifera," pl.80. 



15. P. HEDLEYI, n.sp., Pl.xxvi., fig 14 (see " Notes" i7ifra). 



16. NONIONINA sp. 



Subfamily NUMMULITIN^. 



17. Amphistegina lessoxii, d'Orb. 



18. Operculina complanata, Defrance, var. granulosa, Ley- 



merie, C.R., pl.cxii. f.6, 7, 9, 10. 



PoLYSTOMELLA HEDLEYI, n.sp. (Plate xxiii., fig. 14). 



Has affinities with P. crispa and P. macella. It resembles the 

 former in possessing a well-developed callus of supplementary 

 skeleton infilling the umbilicus on either side, and the latter in 

 being very thin and flat, P. crispa being rather inflated. It is 

 variable in size, but is usually considerably much larger than P. 

 macella. As the figure shows, it differs from both the above-men- 

 tioned genera in possessing a set of very minute skeletal bars of a 

 third order which join the secondary. These show as a beautiful 

 striation under the microscope. It often seems to be of a bluish 

 colour. The striation and flatness of the form constitute the main 

 specific characteristics. The average diameter is about 1 mm. 



Named after Mr. Hedley, of the Australian Museum. 



It is an interesting point that the genera most abundantly 

 represented in this material have beautiful latticed tests, e.g., 



