Revision of the genera of Scolodontidae, part 3: Entodina Ancey, 1887, Keranella gen. nov., Martinella Jousseaume, 1887, †Patagocharopa Miquel & P.E. Rodriguez, 2016, Polygyratia Gray, 1847, Ridleyconcha Christensen, 2020, Smenodonta gen. nov., Systrophia L. Pfeiffer, 1855, and Zilchistrophia Weyrauch, 1960

With this study, we continue the revision of the genera of Scolodontidae (Gastropoda: Stylommatophora), focusing on the taxa with tightly coiled, multiwhorled shells that often bear apertural and/or internal barriers. We analysed type material from all type species and studied some misclassified Charopidae and Streptaxidae. We provide redescriptions and better circumscription of the following Scolodontid taxa: Entodina Ancey, 1887, Systrophia L. Pfeiffer, 1855, and Zilchistrophia Weyrauch, 1960. Martinella Jousseaume, 1887 is transferred from Streptaxidae to Scolodontidae, and the extinct Patagocharopa Miquel & P.E. Rodriguez, 2016 is transferred from Charopidae; Patagocharopa, dating from the Miocene, represents the earliest fossil record of the family. Keranella gen. nov. and Smenodonta gen. nov. are erected. The genera Polygyratia J.E. Gray, 1847 and Ridleyconcha Christensen, 2020, despite recently revised, are also included here for comparison with the other taxa.

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