998 ON A COLLECTION FROM NORFOLK ISLA.ND — MOLLUSCA, 

 20. COLUMBELLA (MiTRELLA) Sp. ? 



One specimen very much sea-worn. 



21. Pleurotoma (Drillia) sp. ? 



Three sea-worn specimens ; they resemble Drillia Beraudiana, 

 Crosse, from Port Jackson. 



22. Strombus (Gallinula) floridus, Lam. 



Stromhus floridus, Lam. Anim. sans Vert. 2nd edit. Vol. IX., 

 p. 707; Stromhus mutabilis, Swainson, Zool. Illust. pi. 71, fig. 1 ; 

 Stromhus flammeus, Link ; Stromhus flosculosus, Morch ; Strombus 

 epii7iellus, Duclos. 



Ten specimens in fair condition, although slightly beach-worn ; 

 it is also found at Lord Howe Island and along the east coast of 

 Australia. It is a very variable species both in colour and 

 marking, which accounts for its having been made into so many 

 species by the various authors quoted above. 



23. CYPR.EA sp. ? 



One single example in the volute or young state. 



24. Natica areolata, Recluz. 



N'atica areolata Recluz, Proc, Zool. Soc. London, p. 206, 1843. 

 Four specimens in very good condition. 



25. Natica sagittata, Menke. 



Natica sagittata, Menke, Moll. Novae Hollandiae, p. 10, No. 30, 

 1843 ; Natica marochiensis, Angas, Proc. Zool. Soc. p. 197, 1867 ; 

 Brazier, "Chevert" Expedition, Proc. Linn. Soc. New South 

 Wales, Vol. I, p. 236, No. 47. 



A number of this veiy common species in very good condition 

 have come to hand. 



