On some Tasmanian freshwater univalves

Abstract

On the 9th August, 1875, I read before this Society a paper on the Freshwater Shells of Tasmania, which was incorporated in the Proceedings, and appears in the volume for 1875, p. 66. In dealing with certain of the univalves, I stated my reasons for regarding them as true Bythiniae, and for not including them in the genus Paludestrina, of D'Orbigny. Since that time I have been able to compare the Tasmanian shells with good types of the European Bythiniae, and I have come to the conclusion that our shells differ in so many important respects from them that they cannot be considered the same. I do not think, however, that they should be considered as Paludestrinae. That is a genus erected for South American shells.