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PLATE X. 



Page 



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



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



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



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



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

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



Trinidad. Upper Oligocene 67 



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



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



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



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



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



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



Eocene 71 



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

 tudinal plications ! 71 



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



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



Eocene 73 



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



Eocene 73 



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



Eocene 72 



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



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



Eocene 73 



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



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



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



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



Eocene 75 



Fusus tceniensis n. sp. Height of fragment 15 mm. Soldado Rock. Lignitic Eocene 75 



Clavella harrisii n. sp. Height 29 mm. Soldado Rock. Midway Eocene 76 



Clavella hubbardanusf Harris. (After Harris.) Mississippi. Midway Eocene 76 



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