Reference

Miguel Ibanez, Klaus Groh, Elena Cavero, Maria Rosario Alonso (1987): Revision of the genus Hemicycla Swainson 1840 on Tenerife: The group of Hemicycla plicaria (Lamarck 1816) (Mollusca: Helicidae) – Archiv für Molluskenkunde118: 77 - 103.

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