262 Transactions. — Geology. 



that the Mount Brown heds belong to the lower part of the 

 Pareora System, reconciles several different opinions, and is 

 therefore likely to be correct. 



4. The Greta beds — as the next higher beds in the Weka 

 Pass may be called — appear to be conformable to the Mount 

 Brown beds, although, as the section is not continuous, such 

 cannot be positively affirmed. No unconformity is noticed by 

 Sir J. von Haast at Mount Brown,* and I have elsewhere 

 remarked that at present "I cannot detect any palaeontological 

 break in the [Pareora] system."! 



The following fossils have been collected in the Greta beds 

 by Sir J. von Haast and myself. They evidently belong to the 

 upper part of the Pareora System, and about 66 per cent, of the 

 Mollusca are recent : — 



1. Carcharodon megalodon, Agassiz. 



2. Purpura textiliosa, Lamarck. 



3. Fusus australis, Quoy and Gaimard. 



4. Fusus spiralis, Adams. 



5. Siphonalia mandarina , Duclos. 



6. Siphonalia dilatata, Quoy and Gaimard. 



7. Siphonalia orbita, Hutton. 



8. Pisania lineata, Martyn. 



9. Nassa incisa, Hutton. 



10. Oliva neozelanica , Hutton. 



11. Ancillaria australis, Sowerby. 



12. Ancillaria hebera, Hutton. 



13. VoLuta corrugata, Hutton. 



14. fhillia wanganuiensis, Hutton. 



15. Triton spengleri, Lamarck. 



16. Natica neozelanica, Quoy and Gaimard. 



17. Cerithidea bicarinata, Gray. 



18. Struthiolaria cincta, Hutton. 



19. Calyptra calyptraijormis, Lamarck. 



20. Turritella rosea, Quoy and Gaimard. 



21. Turritella trieincta, Hutton. 



22. Rotella neozelanica, Homb. and Jacq. 



23. Zizyphinus punctulatus, Martyn. 



24. Cantharidus tcnebrosus, Adams. 



25. Panopaa orbita, Hutton. 



26. Gorbula (?) dubia, Hutton. 



27. Mactra discors, Gray. 



28. Zcnatia acinaces, Quoy and Gaimard. 



29. Paphia neozelanica, Chemnitz. 



30. Paphia ventricosa, Gray. 



• " Bep. Geol. Exp]., 1870-71," p. 15 : No. 12 is the Mount Brown beds, 

 t " The Mollusca of the Pareora and Oamaru Systems " : ," Proc. Linn. 

 Soc. of N.S. Wales," Series 2, vol. i., p. 206. 



