PI ATE X. 



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Fig. 1. Cylichna solivaga n. sp. Height 9.5 mm. Soldado Rock. Lignitic Eocene 65 



2. Terebra sp. indet. Height of fragment 4 mm. Brighton, Trinidad. Oligocene 66 



3. Pleurotoma guppyana n. sp. Height 9 mm. Soldado Rock. Lignitic Eocene 66 



4. Oliva trinidadensis n. sp. Height 15 mm. Brighton. Oligocene 67 



5. Marginella dalliana n. sp. Height 20 mm. Adult shell. Brighton. Upper Oligocene 67 



6. Marginella dalliana n. sp. Height 21 mm. Large but immature shell. Brighton, 



Trinidad. Upper Oligocene 67 



7. Caricella ogilviana n. sp. Height 25 mm. Soldado Rock. Midway Eocene 68 



8. Caricella perpinguis n. sp. Height 29 mm. Soldado Rock. Midway Eocene 68 



9. Caricella sp. indet. Height of fragment 15 mm. Soldado Rock. Lignitic Eocene .. . 68 



10. Volutilithes pariaensis n. sp. Height 18 mm. Soldado Rock. Midway Eocene 69 



11. Volutilithes sp. indet. Height 13 mm. Soldado Rock. Lignitic Eocene 70 



12. Lyria wilcoxiana var. aldrichiana new var. Height 23 mm. Soldado Rock. Midway 



Eocene • ; 71 



13. Lyria wilcoxiana var. aldrichiana new var. Same shell, dorsal view showing longi- 



tudinal plications 



14. Levifusus pagoda Heilprin. Height 39 mm. Soldado Rock. Midway Eocene . . 71 



15. Fusus bocaserpentis n. sp. Height of fragment 35 mm. Soldado Rock. Midway 



Eocene 



73 



16. Fusus bocaserpentis n. sp. Height of fragment 31 mm. Soldado Rock. Midway 



Eocene 



73 



72 

 72 



17. Fusus bocarepertus n. sp. Height of fragment 20 mm. Soldado Rock. Lignitic 



Eocene 



18. Fusus colubri n. sp. Height 25 mm. Soldado Rock. Midway Eocene 



19. Fusus longiusculoides n. sp. Height of fragment 12 mm. Soldado Rock. Lignitic 



Eocene _„ 



20. Fusus meunieri n. sp. Height 18 mm. Soldado Rock. Midway Eocene ^ 



21. Fusus mohrioides n. sp. Height 22 mm. Soldado Rock. Midway Eocene 



22. Fusus sewalliana n. sp. Height 40 mm. Soldado Rock. Midway Eocene 



73 



74 

 75 



23. Fusus 



Soldado Rock. Midway 



Eocene 



sirenideditus n. sp. Height of fragment 40 mm. Soldado ivock. j» j 



" t rtr 



24. Fusus iceniensis n. sp. Height of fragment 15 mm. Soldado Rock. Lignitic Eocene ^ 



25. Clavella harrisii n. sp. Height 29 mm. Soldado Rock. Midway Eocene ^ 



26. Clavella hubbardanusf Harris. (After Harris.) Mississippi. Midway Eocene 



