404 Transactions. — Geology. 



From the French Pass it stretches to Nelson, where it 

 forms all the massive mountains lying between Golden Bay 

 and Marlborough. It occupies the Kaikoura, St. Arnaud, and 

 Spencer Mountains ; and thence, spreading southward, forms 

 the greater part of the Southern Alps, as well as the great 

 subsidiary ranges that descend eastward toward the Canter- 

 bury Plains. From South Canterbury rocks belonging to 

 this system cross into North Otago, whence they stretch 

 westward to the main divide. In Southland they occupy the 

 greater part of the land-surface, and sweep round the south 

 end of Otago to Nugget Point and lower Clutha. 



[Note. — Since the above was written collections of fossils 

 from the Trias in Nelson and Permian at Mount Potts, made 

 by. me early in the year, have been sent to Professor G. 

 Boehm of Freiburg University for determination, to whom 

 also were sent at the same time collections of shells from the 

 Jurassic and Triassic rocks at Nugget Point and Catlin's 

 Eiver made by Mr. A. Hamilton and myself. — The Author.] 



REFERENCE TO PLATES XXVIII. -XXXI. 



Plate XXVIII. — Geological Sketch-plan and Section of Coast-line 



BETWEEN Nugget Point and Catlin's River. 



Plate XXIX. — Section from South Head, Shaw's Bay, to Nugget 



Point. 



10. Claystones and sandstones. 



11. Greywacke. 



12. Indurated claystones. 



13. Breccia conglomerate. 



14. Claystones and sandstones. 



15. Halobia claystone. 



16. Dyke of porphyrite. 



17. Greywacke. 



18. Black Spirifcrina claystones. 



19. Claystone plant beds. 



1. Claystones and sandstones. 



2. Athyris sandstones. 



3. Coarse sandstones. 



4. Oyster and Mytilus bed. 



5. Banded claystones and sand- 



stones. 



6. Trigonia beds. 



7. Granite conglomerate. 



8. Sandstones with claystone 



bands. 



9. Breccia conglomerate. 



A. Track to Roaring Bay. 



B. Nugget Point Lighthouse. 



Plate XXX. — Section from Mount Cook Range to Potts River. 



[1. Sandstones with beds of claystone. 



Jurassic J 2. Sandstones, greywacke, and slaty claystone. 



(3. Sandstones and slaty shales. 



m ■ • j 4. Possiliferous claystones and conglomerate, 

 inassic jg_ ^^^j^ (^j^jiy pj^j^^ ^^^^ 



2a. Inoceramus, Pentacrinus. 



Plate XXXI. 



Upper Figure. — Section on South Side of Tank Gully. 



(a.) Thin-bedded shales and sandstones. 

 (6.) Grey sandstones. 



Lower Figure. — Section across Tank Gully, 

 (a.) Sandstones. 

 (b.) Black Carbonaceous shales with fossil fern-leaves. 



