A new species of Amoria (Gastropoda, Volutidae, Amoriinae) from the mid-east coast of Australia

Abstract

A new species of Amoria Gray, 1855 (Gastropoda, Volutidae) is described from shells dredged off the Australian mid-east coast (Cape Moreton, Queensland and Tweed Heads, New South Wales). Amoria thorae sp. nov. shows a number of similarities in shell form and/or colour pattern to two other small Amoria, A. necopinata Darragh, 1983 and A. benthalis McMichael, 1964 and to the much larger A. undulata (Lamarck, 1804) but can be readily distinguished from these and all other members of the genus by the combination of small shell size, fusiform shape, high spire, equal-sized thick columellar plaits and a single, large undulation of the axial lines.