PLATE III. 



PAGE 



Fig. 15. Ccecum succineum, de Folin, n. sp. . . . . .685 



The shell, magnified 30 diameters. 



Fig. 16. The same, showing the septum, still more enlarged . . .685 



Fig. 17. Ccecum microcyclus, de Folin, n. sp. . . . .686 



The shell, magnified 35 diameters. 

 Figs. 18, 19. The same, showing the septum, still more magnified . .686 



Fig. 20. Ccecum exile, de Folin, n. sp., magnified 35 diameters . . . 687 



Figs. 21, 22. The same, showing the septum, still more magnified . . 687 



» 



Fig. 23. Ccecum crystallinum, de Folin, n. sp. magnified . ... . 687 



Fig. 24. The same, showing the contraction and reflection of the lip, still more 



magnified ........ 687 



o 



