405349Animalia動物界Mollusca軟體動物門Gastropoda腹足綱Heterogastropoda異腹足目Triphoridae左錐螺科Euthymella扁粒螺屬alternataEuthymella alternataLaseron, 1958交替扁粒螺0000405340Animalia動物界Mollusca軟體動物門Gastropoda腹足綱Heterogastropoda異腹足目Triphoridae左錐螺科Euthymella扁粒螺屬elegansEuthymella elegans(Hinds, 1843)花斑扁粒螺0000405347Animalia動物界Mollusca軟體動物門Gastropoda腹足綱Heterogastropoda異腹足目Triphoridae左錐螺科Euthymella扁粒螺屬kosugeiEuthymella kosugeiMarshall, 1983小菅扁粒螺0000405355Animalia動物界Mollusca軟體動物門Gastropoda腹足綱Heterogastropoda異腹足目Triphoridae左錐螺科Euthymella扁粒螺屬pyramidalisEuthymella pyramidalis(Adams & Reeve, 1850)金字塔扁粒螺0000