Park. — Marine Tertiaries of Otago and Canterbury. 549 



height of over 2,000 ft. in a distance of little over thirty miles 

 as the crow flies. 



By the recision of its head-streams the Bulier Biver has 

 cut its course back into the watershed of its eastern neigh- 

 bour, thereby diverting tbe drainage from the Spensers into 

 its own channel. That the recision of the head-waters of 

 the Bulier has taken place since the retreat of the glaciers 

 is almost quite certain, but the cause of the recision is not 

 very evident. Whether it was due to the physical condition 

 and favourable arrangement of the rocks for erosion or fault- 

 ing, or the differential elevation of the land, or to a com- 

 bination of these causes, is a subject that awaits further 

 investigation. 



Fossils. 



From the gritty sandstones exposed at low water below 

 the sea-wall about half-way around the Port Hills Boad to 

 the Waimeas I collected the following fossils : — 



1. Aturia au'straUs* McCoy. 



2. Pleurotoma fusiformis, Hutton. 



3. Siphonalia nodosa, Hutton. 



4. Scaphella pacifica, Lamarck. 



5. Scaphella corrugata, Hutton. 



6. Struthiolaria papulosa, Martyn. 



7. Cirsotrema browni, Zittel. 



8. Natica darwini, Hutton. 



9. Turritella cavers hamensis, Harris. 



10. Turritella kanieriensis, Harris. 



11. Crepidula monoxyla, Lesson. 



12. Calyptrcea calyptrceformis, Lamarck. 



13. Teredo heaphyi, Zittel. 



14. Dentalium mantelli, Zittel. 



15. Ostrea ivullerstorfi, Zittel. 



16. Pecten ivilliamsoni, Zittel. 



17. Glycimeris globosa, Hutton. 



18. Cucullcea alta, Sowerby. 



19. Solcnotellina nitida, Gray. 



20. Flabellum radians, Tenison- Woods. 



21. Flabellum sphenodeum, Tenison-Woods. 



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



Besides these, the following forms are recorded by Hoch- 

 stetter as having been found by him in the Port Hills cliff's : — 



* The Aturia occurs in a crumbling gritty sandstone, close to the 

 sea-wall, at a point about IS chains south of the "basin," and worn 

 smooth by the wash of the tide at high water. The exact spot was 

 shown to my old friend Mr. W. S. Curtis, of the Government Survey 

 Department, Nelson, who will be glad to point out the place to any one 

 interested in our Tertiary geology. — J. P. 



