88 Proceedings of the Royal Society of Victoria. 



arlington, Outer Geelong Harbour, Corio Bay, and Altona 

 Bay. Also from Western Port. Portland (Maplestone). 



Obs. — The type of this species was originally obtained from 

 Port Lincoln, South Australia. Professor Tate states that the 

 types are immature and that D, tesselata, T. Woods, better 

 exemplifies the species than the commoner form in South 

 Australian waters. 



DiALA LAUTA, A. Adams. 



1862. Diala lauta, A. Adams. A.M.N.H., vol. x., 3rd 



ser., p. 298, No. 5. 

 1875. Diala punctata, T. Woods. P.R.S. Tas., pp. 147, 



148. 

 1887. Diala lauta, Brazier. T.R.S. S.A., vol. ix., p. 122. 

 1887. Litiopa (Diala) lauta, Tryon. Man. Conch., vol. 

 ix., p. 282, pi. 53, f. 83. 

 Hab. — A common associate with the previous species, especi- 

 ally in Port Phillip and Western Port. 



Obs. — The type of this species originally came from Port 

 Adelaide. It is somewhat variable in dimensions and in the 

 depth of the suture. 



Diala phasianella, Angas. 



1867. Alaba phasianella, Angas. P.Z.S. Load., p. 113, 

 pi. 13, f. 18. 



1886. Alaba (Diala) phasianella, Watson. Chall. Zool., 



vol. XV., p. 567. 



1887. Litiopa (Diala) phasianella, Tryon. Man. Conch., 



vol. ix., p. 283, pi. 53, f. 84. 



Hab. — Western Port. 



Obs. — This may only be a thin delicate form of Diala monile, 

 it is a form which we usually obtain in Western Port, where the 

 muddy nature of its habitat may possibly account for its varia- 

 tions, as against the stout robust forms from the more sandy 

 parts of Port Phillip. 



Diala magna, Tate. 



1891. Diala magna, Tate. T.R.S. S.A., vol. xiv., pt. ii., 

 p. 259, pi. 11, f. 9. 



