Found on rocks or amongst algae and seagrass, this medium-sized snail has a pale shell, with wavy dark reddish brown axial bands of varying thicknesses. It has a relatively long spire for the family, and straight whorls with a distinct shoulder. It closely resembles the related Prothalotia pulcherrima and Thalotia conica, which differ due to their slightly rounded whorls, which do not have the obvious shoulder of P. lehmanni.
