Note on discovery of the habitat of Amnicola (ampullaria?) tasmanica- Ten.Woods : with a description of a new species of Helix.

Abstract

Helix Hookeriana. n.s. A. M. Johnston. Shell minute, planorbiform, bi-concave, somewhat openly perspectively umbilicated; whorls four and a half obliquely, arcuately striate, compressed, with alternate bands of red and brown; preceding whorls sunk in and closely embraced by the last, the base being rather more deeply submerged, and the upper surface shallower, and more openly perspective; aperture almost linear-lunate; labrum thin, obliquely produced towards periphery, and slightly inflated, forming a narrow groove at the sutures; arch of periphery faintly dilated into an obsolete keel.