is of uncertain placement within Pyramidellidae.
异名.下列为本科分类单元的异名：
分佈.本物种有世界性分佈，但当中不少物种都只在相当细小范围内分佈。在佛得角的各物种均为当地的特有种。
型态描述.The length of the slender, elongated (turreted or conical) shells varies between 0.5 mm and 3.5