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110 CONTRIBUTION TO THE PALEONTOLOGY OF TRINIDAD. 



9. Meretrix subimpressa var. golfotristensis new var. Length 20 mm. Soldado Rock. 



Lignitic Eocene 56 



10. Callista mcgrathiana Rathbun. Length 24 mm. Soldado Rock. Midway Eocene 57 



11. Callista mcgrathiana var. rathbunensis new var. Length 21 mm. Soldado Rock. 



Midway Eocene 58 



12. Pitaria (Lamelliconcha) circinata Born. Young shell. Length 10 mm. Brighton, 



Trinidad. Upper Oligocene 56 



13. Pitaria (Lamelliconcha) circinata Born. Interior of same shell 56 



14. Pitaria (Lamelliconcha) labreana n. sp. Length 17 mm. Brighton. Upper Oligocene 57 



15. Pitaria (Lamelliconcha) labreana n. sp. Interior of same valve 57 



16. Chione dalliana n. sp. Length 20 mm. Brighton, Trinidad. Upper Oligocene 59 



17. Chione veatchiana n. sp. Length 25 mm. Brighton, Upper Oligocene 58 



18. Chione veatchiana n. sp. Same shell. Interior showing hinge characters 58 



19. Chione guppyana n. sp. Length 19 mm. Brighton, Trinidad. Upper Oligocene 59 



20. Chione paraensis White var. Length 8 mm. Soldado Rock. Midway Eocene 60 



21. Venerupis atlantica n. sp. Length of fragment 13 mm. Soldado Rock. Lignitic 



Eocene 60 



22. Mactra austeniana n. sp. Length 27 mm. Brighton, Trinidad. Upper Oligocene 61 



23. Mactra austeniana n. sp. Interior of same shell showing hinge characters 61 



24. Corbula (Cuneocorbula) subengonata Dall. Height 65 mm. Soldado Rock. Lignitic 



Eocene 62 



25. Corbula (Cuneocorbula) helence n. sp. Length 8 mm. Brighton, Trinidad. Upper 



Oligocene 62 



26. Corbula sp. indet. Interior moulds. Length 11 mm. Brighton. Oligocene 64 



27. Corbula sp. indet. Lateral view of same mould 64 



28. Corbula (Cuneocorbula) weaveri n. sp. Length 8 mm. Soldado Rock. Lignitic 



Eocene 63 



29. Corbula (Bothrocorbula) smithiana n. sp. Length 8.5 mm. Brighton, Trinidad. 



Upper Oligocene 63 



30. Corbula (Bothrocorbula) smithiana n. sp. Same shell, interior 63 



31. Pholas mackiana n. sp. Length of fragment 21 mm. Brighton, Trinidad. Oligocene 64 



32. Martesia oligocenica n. sp. Interior mould. Length 14 mm. Brighton. Oligocene 65 



33. Martesia oligocenica n. sp. Same mould: anterior view showing gape of valves 65 



PLATE X. 



Page 



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 71 



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 



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



Eocene 72 



18. Fusus colubri n. sp. Height 25 mm. Soldado Rock. Midway Eocene . . . . . . . ...... 72 



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



Eocene 73 



20. Fusus meunieri n. sp. Height 18 mm. Soldado Rock. Midway Eocene 73 



21. Fusus mohrioides n. sp. Height 22 mm. Soldado Rock. Midway Eocene 74 



22. Fusus sewalliana n. sp. Height 40 mm. Soldado Rock. Midway Eocene 75 



23. Fusus sirenideditus n. sp. Height of fragment 40 mm. Soldado Rock. Midway 



Eocene 75 





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