—-> 
a 
Oe Lo eee 
Yi 
' 
| 
a 
215 
Genus LopperiA, Zate, 1899. 
Differs from Cyclostrema, s. s., by its varicosely margined 
aperture. Type: Liotia Loddere, Petterd. 
Genus PsEeupouiotia, Zate, 1898. 
Shell somewhat like Ziotia; test thick and porcellanous ; 
aperture oblique to the axis, its margin thickened ; umbilicus 
reduced to a mere chink; operculum horny, multispiral. Type: 
Cyclostrema micans, A. Adams; it recalls Mélleria, which is 
differentiated by a calcareous operculum. Judging from pub- 
lished figure and description, Cyclostrema eburnea, Nevill, is 
congeneric. 
CATALOGUE OF THE AUSTRALIAN 
CYCLOSTREMATID At. 
GENUS CYCLOSTREMA, S. Ss. 
1, Cyelostrema Tatei, Angas. P.Z.S., 1873, p. 862, t. 54, fig. 10. 
The ornamentation of the the shell of this species varies from 
eight spiral ribs to nearly smooth. The many keeled form 
resembles ©. cingulifera, A. Adams, whilst the smooth form 
simulates C. levis, Kiener. Reeve, in his Monograph of the 
genus records these Japanese species as also from Port Lincoln. 
My comparison of C. Zatei with the British Museum examples 
of C. cingulifera leaves me in doubt of their specific identity, 
chiefly on account of the very large size of the Japanese shells. 
Until Mr. Edgar Smith has given his opinion on the question, 
which he kindly promised to do, I shall expunge C. cingulifera 
and C. levis from the South Australian fauna, as I tentatively 
regard Reeve’s Australian reference to belong to C. Tatez. 
The species is confined to St. Vincent Gulf, and the coast to 
the westward thereof. (R. Tate). 
2. Cyelostrema Harriettze, Petterd. Journ. Conch., p. 141 (1884). 
This Tasmanian species, types of which I have had under com- 
parison, is closely related to C. Tatez, but differs by its reguiarly 
disposed spiral threads, transversely and closely striated (not 
oblique and distant), depressed spire, and by the subtruncate 
periphery of the last whorl. Also Holdfast Bay, 8. Australia 
(REP. ): 
3. Cyelostrema Johnstoni, Beddome. Proc. Roy. Soc., Tasmania, for 
1882, p. 168 (1883). Pl. vii., figs. 7 a-b. 
A depressed shell, ornamented with sharp elevated transverse 
ribs (about 35 on body-whorl), intercostal spaces without sculp- 
ture ; aperture entire, not thickened. 
