12 ON A FOSSIL MARINE DIATOMACEOUS DEPOSIT. 



DESCRIPTION OF PLATES. 



Plate II. 

 Fig. 1. Triceratium intermedium, Gr. and St., n. sp., 5 y°. 

 „ 2. „ lineatum, Grev., var., 4 ^°. 



„ 3. „ crenulatum, Gr. and St., n. sp., 4 T \°. 



4. „ „ forma gibbosa, 4 £°. 



5. „ Morlandii, Gr. and St., n. sp., 5 ^°. 

 6. MunotogrammaWeissii, Ehr., v&r.producta, Gr. and St., valve, 3 f°. 



7. „ 3 , „ frustnle, »|<>. 



8. Aulacodiscus cellulosus, Gr. and St., n. sp., 4 y°. 



9. „ „ Portion highly magnified, 1Q f°. 







Plate III. 



10. Aulacodiscus Sollittianus var . i^om Zealandica, Gr. and St., 4 °°. 



11. „ notatus, n. sp., Gr. and St., 6 T °. 



12. Auliscus fenestratus, n. sp., Gr. and St., 4 ^°. 



13. ,, Oamaruensis, n. sp., Gr. and St., 4 T "°. 



14. Euodia striata, n. sp., Gr. and St. 3 5 £°. 



