522 STUDIES ON AUSTRALIAN MOLLUSCA, IX., 



Woods commented*' on this confusion. Henn and Brazierf 

 recognised E. dilecta from Watson's Bay. 



The distinction between E. dilecta and E. Candida is not made 

 clear in literature, and I have found the species difficult to 

 identify. Dr. J. C. Verco, who has examined the types of each 

 in the British Museum, kindly points out to me that, from the 

 apex to the notch, E. dilecta has a furrow but E. Candida a ridge. 

 To facilitate recognition, I add a drawing of an example of E. 

 dilecta, 13 mm. long, from Maroubra beach. According to my 

 experience E. dilecta is a rare shell here, and only occurs on the 

 ocean beaches. 



DiALA TRANSLUCIDA, n.sp. 



(Plate xxxiii., fig.35.) 



Shell of variable form, ovate conic, sometimes broader in pro- 

 portion to height than the figure, smooth and glossy, very thin, 

 usually transparent enough for the axial pillar to be seen through 

 the whorls. Whorls nine, regularly tapering, first dispropor- 

 tionately minute, others rounded, last sometimes subcarinate, a 

 row of opaque spots often occurs on the periphery. Aperture 

 oblong, sometimes effuse anteriorly. Columella straight, a little 

 thickened. Length 5-6, breadth 2'6mm. 



Hah. — Balmoral Beach, Sydney (the late Mrs. C. T. Starkey). 



T y p e. — To be presented to the Australian Museum. 



This shell is, like its congeners, very variable. The transparent 

 shell distinguishes it from other Australian Diala, and the 

 straight columella will serve to separate it from such translucent 

 shells as Eidima or Sty lifer, to which it has a deceitful resem- 

 blance. Mr. J. H. Gatliff, who detected this species in Victoria, 

 compared it to the Queensland A. goniochila Ad. The northern 

 .shell differs by its subulate spire and much smaller size. 



* Proc. Roy. Soc. Tas. 1876, p. 103. 



t These Proceedings (2), ix. 1894, p. 178. 



