Schematic summary of penial anatomy of partulid genera, from Kondo (1955) and Schileyko (1999): A Eua B Samoana C Sphendone D Palaopartula E Partula. AC = apical chamber; EP = epiphallus; F = flagellum, PP = penial pilasters; PR = penial retractor muscle; and VD = vas deferens.

  Part of: Slapcinsky J, Kraus F (2016) Revision of Partulidae (Gastropoda, Stylommatophora) of Palau, with description of a new genus for an unusual ground-dwelling species. ZooKeys 614: 27-49.