227 
This may not be a Liotia, as “ labro exteriori subreflexo ”’ does 
not apply in the genus unless the shell is at that stage when the 
variced lip is commencing to be formed. 
Liotia elathrata, Reeve, sp. 
Reference.—Icon. Conch. (Delphinula), f. 21. 
The type is from the Philippines, and Reeve adds Australia. 
I have examples from New South Wales (ex. Aust. Mus.) and 
Queensland (ex. Brisbane Mus.) ; the operculum is Lzotian. 
Liotia discoidea, Reeve, sp. 
Reference.—Op. cit., f. 15. 
A Philippine shell, but has been recorded from North Aus- 
tralia. 
Liotia muricata, Reeve, sp. 
Reference.—Op. cit., f. 18. 
Another Philippine shell extending to North Australia. 
Liotia Mayana, spec. nov. PI. vi., figs. 5a-5c. 
Syn.—L. discoidea, Ten.-Woods, Proc. Roy. Soc., Tasm., for 
1877, p. 39, 1878, non Reeve. 
T have had under examination Tasmanian examples attributed 
to L. discoidea, Reeve, but fail to recognise in them the dis- 
tinctive characters of that species, as indicated by diagnosis and 
illustrations of it ; especially is inapplicable ‘‘ periphery with two 
prominent ribs,” and the ornament of the base is different. The 
same species has been dredged by Dr. Verco in some abundance 
in South Australian waters. 
In size and general appearance it resembles ZL. subquadrata, 
but the suture is not excavated, the aperture not so explanulately 
thickened, and its columella-margin is detached from the 
umbilical rim. 
Its affinity is, however, greater with ZL. clathrata (actual 
examples compared) which has three lire of equal size on the 
periphery instead of gradually diminishing in strength from above 
downwards, the costs are more elevated, imbricating, and closer. 
In LZ. Mayana the last whorl is more rounded, keels less elevated, 
with four instead of three on the periphery; posterior whorls 
with three, uot two, keels; keel at the suture nodular, not 
spinulose. 
Habitat.—Tasmania, the species is rare ; Victoria, South Aus- 
tralia (St. Vincent and Spencer Gulfs, and Fowler Bay, not un- 
common in shell-sand). 
Liotia subquadrata, Ten.- Woods. 
1877. Cyclostrema immaculata, Tenison-Woods. Proc. Roy. 
Soc.. Tasm., for 1876, p. 148. 
