HuTTON. — (xeology of the Trelissick Basin. 409 



includes 1 to 4 of the White-water Creek section, and 1 to 2 of 

 the Thomas River section. The upper horizon includes the 

 beds between these and the lignite or plant beds. 



Lower Horizon. 



1. Cominella carmata, Hutton. 



2. Voluta kirkii, Hutton. 



3. Triton pseiidospengleri, Tate. 



4. Crepidula monoocyla, Lesson. 

 6. Crepidula costata, Quoy and Gaim. 



6. Turritella gigantea, Hutton. 



7. Turritella rosea, Quoy and Gaim. 



8. Vermetus moniliferus, Hutton. 



9. Turbo superbus, Zittel. 



10. Dentalium giganteum, Sowb. 



11. Venus ohlonga, Hanley. 



12. Venus yatei, Gray. 



13. Cytherea assimilis, Hutton. 



14. Dosinia magna, Hutton. 



15. Dosinia subrosea, Gray. 



16. Tapes curta, Hutton. 



17. Cardium spatiosum, Hutton. 



18. Crassatella ampla, Zittel. 



19. Area decussata, Sowb. 



20. Cucullcea ponderosa, Hutton. 



21. Cucullcea worthingtoni, Hutton. 



22. Cucullcea alta, Sowb. 



23. Pectuncuhis laticostatus, Quoy and Gaim. 



24. Pectunculus globosus, Hutton. 



25. Pectuncidus cordatus, Hutton. 



26. Modiola australis, Gray. 



27. Lima crassa, Hutton. 



28. Hinnites trailli, Hutton. 



29. Rhynclionella nigricans, Sowb. 



Upper Horizon. 



1. Stenorhynchus (?), caudal vertebra. 



2. Myliobatis, teeth. . 



3. Purpura textillosa, Lamarck. 



4. Siphonalia mandarina, Duclos. 



5. Cominella carinata, Hutton. 



6. Cominella maculata, Martyn. 



7. Oliva neozelanica, Hutton. 



8. Ancillana australis, Sowb. 



9. Voluta pacijlca, Solander. 



10. Voluta gracilis, Swainson. 



11. Voluta kirkii, Hutton. 



12. Conus trailli, Hutton. 



