PLATE 24. 
Fig. 1. Ophicardelus australis, Q. & G. 17 * 18-5 mm. p. 590, 
Fig. 2. Marinula Filholi, Hutton. 5 x 9mm. p. 591. 
Fig. 3. Leuconia inermis, Hedley. 1-1 x 3mm. p. 592. 
Fig. 4. Leuconia obsoleta, Hutton. 1:7 * 3-1 mm. p. 593, 
Fig. 5. Cremnobates parva, Swainson. 5 x 7-5 mm. p. 594. 
Fig. 6. S¢phonaria australis, Q. & G. 10-5 & 14-5 mm. p. 598. 
Figs. 7, a, b. Siphonaria Cookiana, Suter. 9 * 12mm. p. 599. 
Fig. 8. Siphonaria zelandica, Q. & G. 16-3 *% 19mm. p. 600. 
Fig. 9. Gadinia conica, Angas (= nivea, Hutton). 18 * 20-5 mm. pp. 603, 1083. 
Fig. 10. Lymnoéa Alfredi, Suter. 4 7-5 mm. p. 604. 
lod 
Fig. 11. Lymnoéa leptosoma, Hutton. 6-7 x 12mm. p. 605. 
Fig. 12. Lymnoéa pusilla, Hutton. 2-5 x 4mm. p. 605. 
Fig. 13. Lymnoéa tenella, Hutton. 1-7 x 45mm __ p. 606. 
Fig. 14. Amphipeplea ampulla, Hutton. 6-7 » 10-2 mm. p. 607. 
Fig. 15. Amphipeplea arguta, Hutton. 4:5 > 7-5 mm. p. 608. 
Figs. 16, a. Planorbis corinna, Gray. 4:5 * I-Lmm.  p. 610. 
Fig. 17. [sidora antipodea, Sowerby. 12 x 22mm. p. 611. 
Fig. 18. Lsidora Hochstetteri, Dunker. 9 17 mm. p. 611. 
Fig. 19. [sidora lirata, T.-Woods. 5 x 10mm. p. 612. 
Figs. 20, a. Isidora lirata conferta, Suter. 7X 11mm. p. 613. 
Fig. 21. Isidora nove-zealandia, Sowerby. 12 * 17 mm. p. 613. 
Fig. 22. Lsidora tabulata, Gould. 16 x 22mm. p. 614. 
Fig. 23. Isidora tabulata moesta, H. Adams. 11 x 17mm. p. 614. 
Fig. 24. Latea neritoides, Gray. 8:5 x 6mm. p. 616. 
Fig. 25. Gundlachia Lucasi, Suter. 3% 2mm. p. 617. 
Figs. 26, a. Gundlachia neozelanica, Suter, 3% 2 x 0-7 mm. p. 617. 
