STKES : NON-MARINE MOLLUSCA OF NORFOLK & PHILLIP IS. 147 



EXPLANATION OF PLATE XIII. 



Figs. 1, 2. Medyla imitatrix, n.sp. 



3. Sitala Macgillivrayi, n.sp. 



4, 5. Microcystis mix, n.sp. 



6, 7. Fretum Grayi, n.sp. 



8, 9. Microcystis atxtaneocincta, n.sp. 



10, 11. Fretum Suteri, n.sp. 



12. Succinea Norfolkensis, n sp. 



13. Vertigo NbrfoUcensis, n.sp. 



14. Paludestrina Norfolkensis, n.sp. 



15. Omphalotropis Suteri, n.sp. 

 16, 17. Trochonanina platysoma, n.sp. 



18. Omphalotropis Brenchleyi, n.sp. 



19. Fretum Suteri, n.sp. (radnla). 



The types of Fretum Suteri and Omphalotropis Suteri are in Mr. Suter's 

 collection ; all others in the British Museum. 



