106 Proceedings of the Royal Society of Victoria. 



Operculum concentric, of uniform thickness, concave and 

 shelly on the exterior, which is faintly granular. Horny on its 

 inner face. 



Dimensions. — Diameter, 4 mm. ; altitude, 2 mm. ; inside 

 diameter of aperture about 1 mm. 



Locality. — Flinders beach. Western Port (Gatliflf). 



Observations. — In general habit approaching to L. discoidea. 

 Reeve, but in that species the transverse ridges are only present 

 on the upper portion of the body whorl, and our shell does not 

 attain to one-fourth the size. We have much pleasure in naming 

 the species after our friend Mr. Charles Hedley, Conchologist to 



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