Shells of Hystricella aucta. 71 neotype, SMF 348937 from Barbinha 72 Barbinha 73 Ponta da Canaveira 74 Hystricella microcarinata sp. n., holotype, SMF 348924. Scale bar: 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