229 
Peroni, Kiener (Delphinula), is not Australian.* 
Siderea, Angas = L. Tasmanica. 
Speciosa, Angas = Pseudoliotia micans. 
Species DvuBIous. 
Incerta, Ten.-Woods, Proc. Roy. Soc., Tasm., for 1876, 1877 
. 148. 
‘ Mr. Petterd, 1888, regarded this shell as an immature As- 
tralvum Tasmanicum, but this cannot be correct, as, except 
‘‘nacreous,” none of the characters of L. incerta apply to a young 
shell of Astralium Tasmanicum=aureum, of 5 mm. diameter. 
On the other hand, Mr. Legrand states that it is a decided 
species of Ziotia, whilst the author of the species writes, op. cit., 
“TY only provisionally class it as a ILvotia.” I incline to the 
Opinion that it is an immature LZ. Tasmanica. In any case, it 
will be well to suppress the name. 
* This shell is recorded from the Indo-Pacific regions, whilst the type is 
attributed by Peron to the Isles St. Pierre and St. Francis, off the coast 
of Western South Australia. That locality is the only Australian record 
known to me; it should be rejected, not only on that account, but also 
because it and other well-known species of the tropics attributed to the 
same locality by Peron, such as T'ellina capsoides, Isocardia semrsulcata, 
_&c., have not been rediscovered in our temperate waters. 
