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 Buliminidae Kobelt, 1880, orth. rej. see Family Buliminusidae Kobelt, 1880
               Subfamily Bulimininae Kobelt, 1880, nom. illeg. see Subfamily Buliminusinae Kobelt, 1880
                 Genus Pupopsis Gredler, 1898
                   1 Subgenus Clausiliopsis Möllendorff, 1901
                   2 Subgenus Holcauchen Möllendorff, 1901