Genitalia and anatomy of Callina rotula. Ribeira da Areia: 210 whole genitalia excluding part of OSD, AG and gonads 211 ornamentation of the inner walls of the flagellum, the penial complex and the genital atrium 212 penial papilla 213 cross section of penial papilla. Scale bars 1 mm.

 
 
  Part of: De Mattia W, Neiber MT, Groh K (2018) Revision of the genus-group Hystricella R. T. Lowe, 1855 from Porto Santo (Madeira Archipelago), with descriptions of new recent and fossil taxa (Gastropoda, Helicoidea, Geomitridae). ZooKeys 732: 1-125. https://doi.org/10.3897/zookeys.732.21677