On the freshwater shells of Tasmania

No attempt has yet been made to arrange the freshwater shells of Tasmania. The land shells have been carefully catalogued by Mr. Legrand, so that little remains to be desired in that department of our island fauna.
The marine shells have received much attention from most eminent naturalsts, though a list carefully criticised, with a well arranged account of the bibliography is much wanted.
But the freshwater shells have been almost entirely neglected.
There have been one or two descriptions of Physa in Reeve, and one or two other notices of species scattered through various scientific publications, but the majority of the shells here described are new to science.