A new Oxychilus species with unique penial structures is described from the island of Santa Maria, Azores; it is classified with the subgenus Ortizius.

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Basteria

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Nederlandse Malacologische Vereniging

A.M. Frias Martins, & Th.E.J. Ripken. (1991). Oxychilus (Ortizius) lineolatus n. sp. (Gastropoda Pulmonata: Zonitidae) from Santa Maria Island, Azores. Basteria, 55(1/3), 45–53.