Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Divasibranchia Minichev & Starobogatov, 1975
       Order Stylommatophora Schmidt, 1855 see Infraorder Stylommatophora Schmidt, 1855
         Suborder Orthurethra Pilsbry, 1900
           Superfamily Buliminoidea Kobelt, 1880, nom. illeg.
             Family Cerastuidae Wenz, 1930, nom. illeg. see Family Cerastidae Wenz, 1923
               Genus Rhachis Pfeiffer, 1856, nom. illeg. see Genus Rachis Albers, 1850
                 Subgenus Pleurorhachis Connolly, 1939 see Genus Pleurorhachis Connolly, 1939