101 
Rissopsis buliminoides, spec. nov 
Shell small, cylindroid, thin, opgoen ia Whorls six, flatly 
jm sculptured ‚wit th faint axial st rie of growth; sutu 
somewhat explanulate ; columella with a slight torsion over à 
minute umbilical chink. 
Length, 4:25 ; breadth, l:3 mm. 
Federick Henry Bay, Tasmania; 10 fathoms, W. L. May. 
Rissopsis consobrina, spec. nov. 
Elongate, turreted, hyaline (in a fresh state), with rounded 
whorls and a deep suture, sculptured with curved growth-lines. 
Specs elongate-oval, somewhat explanulate, columella-lip very 
‘thin and exsert. 
Its turreted form, rounded whorls, and elongate-oval aperture 
distinguish it from R. buliminoides. 
ength, 3:5 ; width, 1:0 mm. 
Federick Henry Bay, Tasmania, common, W. L. eu 
Cyclostrema porcellana, spec. no 
Shell oval-conic, moderately stout, smooth, shir ddr opaque- 
white. Spire-whorls three and a-half, convex, sloping gently 
faintly marked by oblique striw. Pullus of one an a-ha 
whorls, translucent, depressedly convex. Periphery of last yer 
roundly angulated. Aperture roundedly-oval, oblique; peristom 
incomplete ; outer lip rather thin; columella slightly exsert, but 
not reflected over a minute umbilicus. Six examples 
Length, 1:8 ; breadth, 1:3 mm. 
This species is more conie than such related forms of Tubiola 
as C. australe, C. contabulatum, and C. micron. 
Frederick Henry Bay, Tasmania ( W. L. ie 
Zidora Loddere. 
Z. d ey PLS, N. 8. S Wales, rp p. 93, three 
Miror ; non Beddom 3. 
species is Ar cn to the Japanese Z. reticulata ; 
and fede from Reeve's figure of that shell, the Tasmanian 
congener differs by relatively greater wi 
The shell which. Tate rightly attributed to Beddome's ng 
‚and described under the name of Z. Legrandi, T.R.S., S. Aust. 
XVIIL, p. 118, 1894, differs from other known species by its 
-apex situated far within the vertical plane of the posterior 
margin. 
Tasmania ( Miss Lodder ) ; N.S. Wales (apud Hedley). 
