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a–c Neritina mesopotamica d–e Neritina euphratica f–g Neritina schlaeflii a shell (syntype) b lable c operculum d shell (syntype, ZMZ 528916, Irak, Samava, photo: Eike Neubert) e operculum of Neritina euphratica from Euphrates f shell (syntype, ZMZ 529679, Persian Gulf, Island Ghaes, photo: Eike Neubert) g operculum of Neritina schlaeflii from Shatt Al-Arab-Fao region.
