Brachiopod material attributed to Dallithyris fulva (Blochmann, 1906) from the collections of the Tasmanian Museum and Art Gallery was assessed relative to type material, permitting an updated description of the species to be prepared, and for the morphometric variation in the species to be better understood. Specimens confused with D. fulva were found to be attributable to a new species in the related genus Liothyrella, the first confirmation of this genus from southern Australia. The new species, described as L. southernsurveyori sp. nov., is restricted to waters off southern, eastern and western Tasmania, and is particularly abundant on seamounts between 512–1650 m depth.