290 rUOCEEDINGS or THE MALACOLOGICAL SOCIETY. 



Remarkable for its lon^ sleiuler fomi, and the fine close-set thread- 

 like himelhie, which become more remote and prominent on the body- 

 whorl, especially around its base. 



EXPLANATION OF PLATE XVIL 



Figs. 1-3. Rhytida Trobriandensis. 



,, 4-6. jNIacrochlamys Dobertyi. 



,, 7,8. Ariophauta (Hemiplecta) Andaieusis. 



,, 9. Papuiua rufo-piirpurea. 



,, 10,11. Papuiua molesta. 



,, r2-14. Cliloritis tnsco-purpurea. 



,, 15. Pupiiia I'apiiana. 



,, 16. Truucatella gracilenta (enlarged). 



,, 17. "Apical whorls (iiiag-nified). 



