PLATE II. 
Figs. 1, 2. Clio ( Creseis ) conica (Esclisclioltz). 
Fig. 1. Shell, from left side; magnified ten diameters. 
Fig. 2. Embryonic shell, from left side. 
Fig. 3. Clio ( Hyalocylix ) striata (Rang). Embryonic shell, from ventral surface. 
Figs. 4-6. Clio polita (Craven, MS.). 
Fig. 4. Shell, from right side ; magnified six diameters. 
Fig. 5. Shell, from dorsal surface ; magnified six diameters. 
Fig. 6. Embryonic shell, from ventral surface. 
Fig. 7. Clio chaptali (Souleyet). Embryonic shell, from ventral surface. 
Fig. 8. Clio australis (d’Orbigny). Embryonic shell, from ventral surface. 
Figs. 9-11. Clio sulcata (Pfeffer). 
Fig. 9. Shell, from right side ; magnified four diameters. 
Fig. 10. Shell, from dorsal surface; magnified four diameters. 
Fig. 1 1 . Embryonic shell, from ventral surface. 
Figs. 12, 13. Cymbulia par videntata, n. sp. 
Fig. 12. Shell, from anterior side ; magnified two diameters. 
Fig. 13. Shell, from posterior side ; magnified two diameters. 
Fig. 14. Larval shell of Cymbulia, from aperture, with operculum in situ. 
Figs. 15, 16. Cymbuliopsis ovata (Quoy and Gaimard). 
Fig. 15. Shell, from anterior side; magnified two diameters. 
Fig. 16. Shell, from left side; magnified two diameters. 
Fig. 17. Larval shell of Gleba, from aperture. 
