106 Proceedings of the Royal Society of Victoria. 



ingly brief and vague description of this species T can only fall 

 back on the accompanying figure for difterential characters, and 

 from this I judge that the present species differs in its embi'yonic 

 characters, its more rapidly tapering spire, its slightly more con- 

 vex whorls, and its much smaller number of different costse or 

 plicae. 



44. Semicassis sufflata, T. Woods. 



Cassis sufflaius, T. Woods, P.R.S.Tas., 1876, pp. 93, 94. 



Semicassis traiisejiiia, Tate, Gast II., 1889, p. 166, pi. viii., 

 fig. 2. 



Observations. — There seems no doubt tiiat the shell described 

 by Professor Tate under the name of S. transenna is the same 

 species as that previously described by Tenison Woods under the 

 name of C. sufflatus. The latter name should certainly stand, as 

 it clearly has priority. 



45. Cassidaria wilsoni, Tate. 

 Id., Tate, Gast. II., 1889, p. 169, pi. vii., fig. 14. 



46. Mapginella strombiformis, T. Woods. 



M. strombiformis, T. Woods, P.R.S.Tas., 1876, p. 109. 

 M. strombiformis, Tate, Phil. Trans. S.A., 1878, p. 93. 

 M. stronibifor/nis. Jolmston, Geo. Tas., 1888, pi. xxxi., 

 figs. 4, 4<?. 



47. Cyppaea ovulatella, Tate. 



Id., Tate, Gast. III., 1890, p. 208, pi. vi., figs. 7, 7^?. 



Observations. — The present example apparently differs only in 

 size from that described by Professor Tate, being of nearly twice 

 the dimensions given by him. 



48. Cyppaea apchepi, T. Woods. 



C. arclieri, T. Woods, P.R.S.Tas., 1875, p. 23, pi. 1, fig. 9. 

 C. arciieri, Tate, Gast. III., 1890, p. 205, pi. vi., fig. 1. 



49. Cyppaea platypyga, McCoy. 



C. platypyga, McCoy, Prod. Pal. Vic, Dec. III., p. 39, pi. xxx., 

 figs. 1-1 <r. 



C. platypyga, Tate, Gast. III., 1890, p. 211. 



