Achatina lhotelleriana Preston, 1909 accepted as
Achatina tincta Reeve, 1842 (original description)
Corbicula gabonensis Preston, 1909 (original description)
Dreissensia bananaensis Preston, 1909 accepted as
Dreissena bananaensis Preston, 1909 accepted as
Mytilopsis ornata (Morelet, 1885) (original description)
Dreissensia gibberosa Preston, 1909 accepted as
Mytilopsis africana (Van Beneden, 1835) (original description)
Ennea (Gulella) pallaryi Preston, 1909 accepted as
Gulella vriesiana (Ancey, 1885) accepted as
Digulella vriesiana (Ancey, 1885) (original description)
Fischeria globosa Preston, 1909 accepted as
Iphigenia curta (Dunker, 1867) (original description)
Galatea rubrotincta Preston, 1909 accepted as
Galatea congica O. Boettger, 1885 (original description)
Mutela lhotelleriana Preston, 1909 accepted as
Mutela mabilli (Rochebrune, 1886) (original description)
Spatha semicorrugata Preston, 1909 accepted as
Aspatharia ganciniensis (Rochebrune, 1886) (original description)
Unio (Nodularia) subnigra Preston, 1909 accepted as
Coelatura gabonensis (Küster, 1862) (original description)