Plate 8 



Figures 1-3. El phidiuni cxcavatum (Tevquem). X 40. (After Terquem.) From 

 coast of France, a, side views; b, apertural views. 

 4-6. Elphidium excavatum (Terquem). X 60. From Bognor, England. 



7. Elphidium excavatum (Terquem). (After Williamson.) 



8. Elphidium discoidale (d'Orbigny). (After type figure.) a, side 



view; b, apertural view. 



9. Elphidium discoidale (d'Orbigny). X 60. From Tortugas, Fla. 



a, side view; b, apertural view. 

 10. Elphidium owcnianum (d'Orbigny). (After type figure.) a, side 

 view; b, apertural view. 

 11, 12. Elphidium owenianum (d'Orbigny). X 60. From Falkland Is- 

 lands. 



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