THE MOLLUSCAN FAUNA OF TASMANTA. 55 
All aa “rine are between the tide marks. A little further 
from the we find Haliotis nevosa, Carinidea aurea, Cominella 
costatum, rset littorinoides, Ostrea edulis, and in sandy places 
ual 
varieties of Littorina. But in place of the Trochocochlea vaubeabie 
which in Tasmania swarms under every stone, we find large 
numbers of a Thalotia, T. conica, with occasio onally T. picta, and 
the variety (which is regarded as a species b essrs, Crosse 
and Fischer), 7. Ram buri, ome bellulus, £. badius and £. 
trosodontis are als6 very common and very large, but not upon 
the rocks ; me are found Sonilings on. the sea-weeds a little way 
out from the shore. Now all of “these shells are found on the 
Tasmania. Haliotis nevosa is common through all the S. E. and 
. coasts, and in Tasmania everywhere ; it forms an ditiche of 
export to some Chinese fishermen on the south coast. Haliotis 
albicans is found ony on the north aang it has not been found 
in Victoria, and is more generally on the 8. A. coast.* The 
TTittori ndx of Tasmania sagen are those of the Australian 
coast, except Littorina scabra, LI. pyram pegd - common on 
the’ south-east. The latter is deen on the Tasmanian 
been said to give a poaslect me of the differences of the fauna, 
and as the subject is too large to be disposed ge in one paper, 
further details may form the mabjecs of a oe 
clusion, I give a list of those fossil forms more or - hae abundant 
in our tertiary strata which are found liieg in Australia. 
* This shell was first named H. glabra by Swainson, but as that name was 
sapien orgy the name albicans, of (a0 by which it is generally known, may 
