PLATE VIII. 



Fig. I. Emarginula sibogae n. sp. 



Fig. 2. Subemarginula plana n. sp. 



Fig. 3. Subeinar gimila dubia n. sp. 



Fig. 4. Tooth of Radula of Neritina brevispina Lam. var. miitica Martens. 



Fig. 5. Teeth of Radula of Neritilia rubida Pease. 



Fig. 6. Teeth of Radula of Pseudococculina rugosoplicata n. sp. 



Fig. 7. Teeth of Radula of Pseudococculina gramdata n. sp. 



Fig. 8. Teeth of Radula of Cocculina sid^quadrata n. sp. 



Fig. 9. Teeth of Radula of Cocculina oblonga n. sp. 



Fig. 10. Teeth of Radula of Cocculina ovata n. sp. 



Fig. II. Teeth of Radula of Cocculina alveolata n. sp. 



Fig. 12. Teeth of Radula of Cocculina subcompressa n. sp. 



Fig. 13. Teeth of Radula of Pectinodonta sp. 



