24 PEOCEEDIKGS OF THE MALA.COLOGICAL SOCIETY. 



5. LioTiA EOTULA, n.sp. PI. II, Kg. 6. 



Shell small, discoidal, umbilicate, rather solid, translucent, radiately 

 prominently ribbed. Sculpture consisting of distant, elevated, and 

 rounded radiate riblets, much closer together on approaching the 

 aperture. Interstices distinctly microscopically spirally striate. 

 Colour white. Spire flat, the apex only slightly raised. Protoconch 

 of two narrow, smooth, convex whorls. "Whorls 4, convex, the last 

 large, rounded at the periphery ; base convex. Suture impressed. 

 Aperture circular. Peristome continuous, thickened by the last 

 radiate rib. Columella arcuate, not reflexed. Umbilicus wide, 

 perspective, showing all the whorls. Diam. r7, height 1 mm. 



Mah. — Near the Snares Islands, in 50 fathoms (Capt. J. Bollons). 



Allied to L. annulaia, Ten. -Woods, from Tasmania, which, however, 

 has the radiate riblets more distant and lacks spiral striation. 

 L. corona, Hedley, is also nearly related, but it is much smaller and 

 the radiate riblets are less elevated. Type in my collection. 



6. CxcLosTEEMA MicEA, Teu.-Woods, 1877. 



Cydostrema micra, T. -Woods: Proc. Poy, Soc. Tasm., 1876 (1877), 



p. 147. 

 C. {Tuhiola) micra, T. -Woods : Man. Conch. (1), vol. x, p. 95, 



pi. xxxiii, fig. 13. 

 C. micron, T. -Woods : Tate, Proc. Roy. Soc. S. Austr., vol. xxiii, 



p. 221. 

 C. micra, T. -Woods : Pritchard & Gatliff, Proc. Poy. Soc. Yict., 



vol. xiv (n.s.), p. 101. 



Shell small, elevated turbinate, white, polished, umbilicated. 

 Sculpture consisting of exceedingly fine microscopical spiral striae, 

 more distinct on the umbilicus. Colour white. Spire conical, 

 outlines convex, a little higher than the aperture. Protoconch minute, 

 spherical, of one smooth translucent whorl. Whorls 5, regularly 

 increasing, convex, the last rounded at the periphery ; base convex. 

 Suture deep. Aperture circular, slightly angled above. Peristome 

 continuous, sharp, not thickened. Columella arcuate, thin. Umbilicus 

 narrow, deep. Operculum horny, multispiral. Diam. 1*5, height 2 mm. 



Hah. — Near the Snares Islands, in 50 fathoms (Capt. J. Bollons). 

 The type is from Tasmania, and the species is also recorded from 

 South Australia and Victoria. 



7. Ctclosteema cortilum (Hutton). 



Scalaria corulum, Hutton : Trans. N. Zeal. Inst., vol. xvii, 1884 (1885), 

 p. 322, pi. xviii, fig. 22 ; Plioc. Moll., p. 67, pi. viii, fig. 72 ; 

 Suter, Trans. N. Zeal. Inst., vol. sxxix. 



Shell minute, elevated turbinate, perforate, translucent, white, 

 shining. Sculpture consisting of fine, equidistant radiate riblets, 

 about twenty-eight on the last whorl, the interstices finely micro- 

 scopically spirally striate. Colour white. Spire conical, higher 

 than the aperture, outlines convex. Protoconch small, globose, of one 

 smooth whorl. Whorls 5, rather rapidly increasing, convex, the last 



