286 STUDIES ON AUSTRALIAN MOLLUSCA, xi., 



These are labelled "Diala picta A. Ad., Annals, 1861, viii., p. 243. 

 Annals, 1862, x., p. 295. Hab., Takano Sina, M.C." These Japan- 

 ese shells are very like my Diala translucida in general appear- 

 ance, in translucent substance, and in a band of opaque white spots 

 on the body whorl. But D. translucida differs by being more glo- 

 bose, and by lacking the spiral rufous lines of D. picta. As the 

 species has not yet been illustrated, one of these British Museum 

 shells is here shown. It is doubtful if D. picta or varia are Aus- 

 tralian. 



Diala varia A. Adams. 



(Plate xviii., fig.56.) 



Diala varia A. Adams, Ann. Mag. Nat. Hist. (3), viii., 1861, p. 



248; Id., Angas, Proc. Zool. Soc, 1878, p. 867; Id., Cooke, Ann. 



Mag. Nat. Hist. (5), xvi., 1885, p. 268; Id,, Pritchard and Gatliff, 



Proc. Roy. Soc. Vict., xiv., 1902, p. 89. 



In the British Museum, this species is shown from China and 

 Japan, but not from Australia. One, which appears to be a 

 cotype, is here figured. 



Diala pulchra A. Adams. 

 (Plate xviii., fig.57.) 

 Alaba pulchra A. Adams, Ann. Mag. Nat. Hist. (3), x., 1862, p. 

 296; Id., Angas, Proc. Zool. Soc, 1865, p. 173. 



Diala pulchra Pritchard and Gatliff, Proc. Roy. Soc. Victoria, 

 xiv., 1902, p. 89. 



My figure represents one of two specimens in the British 

 Museum, probably types, but not so marked, labelled, "pulchra A. 

 Ad., P. Adelaide, M.C." 



Diala. lauta A. Adams. 

 (Plate xviii., fig.58.) 

 Diala lauta A. Adams, Ann. Mag. Nat. Hist. (3), x., 1862, p. 

 298; Id., Angas, Proc. Zool. Soc, 1865, p. 173; Id,, Pritchard and 

 Gatliff, Proc. Roy. Soc. Vict., xiv., 1902, p. 88. 



Litiopa lauta Tryon, Man. Conch., ix., 1887, p. 282, PI. 53, fig. 

 83. 



