510 Transactions. — Geology. 



A few chains further north, the cross-section running from 

 the beach westward to trig, station T is as follows : — 



TV" feB S. 



Cross-section from Sea to Trig. T. 



3. Calcareous sandstone (Oatnaru limestone). 5. Tufaceous greensands, 

 fossiliferous. 6. Basalt flow and tuSs. 7. Calcareous sandstone 

 (Waitaki Stone). 



Fossils. 



Bed No. 1 consists of hard yellowish-coloured calcareous 

 tuffs, in places passing into an impure limestone. In a large 

 collection of fossils made from it at this place the following 

 species were identified : — 



1. Aturia australis, McCoy. 



2. Scaphella corrugata, Hutton. 



3. Siphonalia regularis, Hutton. 



4. Pleurotoma fusiformis, Hutton. 



5. Nassa socialis, Hutton. 



6. Trochus nodosus, Hutton. 



7. Calliostoma spectabile, A. Adams. 



8. Dentalium giganteum, Hutton. 



9. Dentalium mantelli, Zittel. 



10. Pecten williamsoni, Zittel. 



11. Pecten hittchinsoni, Hutton. 



12. Pscudamussium huttoni, Park. 



13. Venericardia aivamoaensis, Harris. 



14. Lima imleata, Hutton. 



15. Terebratella gaulteri, Morris. 



16. Terebratula tayloriana, Colenso. 



17. Bouehardia tapirina, Hutton. 



18. Trochocyathus mantelli, M. Edw. and H. 



19. Balanophyllia hectori, Tenison- Woods. 



20. Spheno trochus huttonianus, Tenison-Woods. 



21. Meoma crawfordi, (?) Hutton. 



Small branching and net corals are very abundant. Crab- 

 remains were also found. A large example of Aturia australis, 



