M. K. Mestater. — Preliminary List of Mollusca. 125 



Liotella incerta (Tenison- Woods). Plate XII, fig. 5. 



Pioc. Roy. Soc. Tasmania, 1(S76, fig. 5, p. 148. For Liotella see 

 Trans. N.Z. Inst., vol. 47, p. 442. 



Lissospira corulum (Hutton). 



I'rans. N.Z. Inst., vol. 47, p. 443. 



Lissospira micra (Tenison- Woods). 

 Trans. N.Z. Inst., vol. 47, p. 444. 



Cocculina compressa Suter. 



Man. N.Z. Mollusca, p. 174, pi. 34, figs. 14, 14a, 1914. 



The specimens from (B) are rather variable, being mostly wider 

 and shorter than the type, lout one small one agrees fairly well with it. 

 I am almost inclined to think them worthy of being ranked as a variety. 

 It may be possible to settle this point next year, as I have specimens from 

 other localities which could be compared with each other and with 

 the type, which is in my collection. The single example from (C) is 

 true to type, though considerably smaller. 



Rissoa suteri Hedley. 



Trans. N.Z. Inst., vol. 47, p. 449. 



Rissoa fumata Suter. 



Trans. N.Z. Inst., vol. 47, p. 450. 



Rissoa exserta Suter. 



Trans. N.Z. Inst., vol. 47, p. 453. 



Omalaxis Deshayes. 



Trans. N.Z. Inst., vol. 47, p. 461. 



Discohelix Dutiker. 



There seems to be some confusion in the use of the generic names 

 Omalaxis Deshayes and Discohelix Dunker. In this paper I follow Mr. C. 

 Hedley's use of Discohelix. 



Discohelix meridionalis Hedley. 



One broken specimen from (C), Avhich unfortunately broke still more 

 while under examination, but as it is the first record of it from New 

 Zealand I shaU preserve it till a better specimen is obtained. It is 

 undoubtedlv very rare. (Mem. Austral. Mus., vol. 4, 1903, p. 351, 

 fig. 74). 



Discohelix hedleyi n. sp. Plate XII, fig. 6, 6a, 66. 



Shell small, solid, rotate, both upper and under surface slightly 

 concave; sides slightly concave on each side of the central keel. Colour 

 white. Whorls almost square in section, with a keel projecting at the 

 upper and lower corners, and another midway between them. Sutures 



