PLATE IX. 



Figs. I, 2. Vesicomya solidissima sp. nov. Holotype from St. i8. Natural size. 



Figs. 3, 4. Vesicomya solidissima sp. nov. Hinge of Holotype. Natural size. 



Figs. 5, 6. Diplodonta diibia sp. nov. Holotype from St. 27g. X 4. 



Figs. 7, 8. Diplodonta dubia sp. nov. Hinge of Holotype. X 5- 



Figs. 9, 10. Jsoconcha sibogai Gen. et sp. nov. Holotype from St. 300. X 6. 



Figs. II, 12. Isoconcha sibogai Gen. et sp. nov. Hinge of Holotype, X 8. 



Figs. 13, 14. Abra inanis sp. nov. Holotype from St. 159. X 3- 



Figs. 15, 16. Abra weberi sp. nov. Holotype from St. 306. X 3- 



Fig. 17. Cuspidaria (Cuspidaria) macrorhynchiis Smith. A right valve from St. 104. X 4- 



Figs. 18, 19. Cuspidaria [Cardiomya) sibogai sp. nov. Holotype from St. 48. X 2. 



