Libellus aponinus (Kützing) De Toni, 1890 accepted as
Navicula aponina var. aponina Kützing, 1844 (new combination reference)
Libellus complanatus (Grunow; Grunow in Schmidt et al.) De Toni, 1890 accepted as
Amphora complanata Grunow, 1867 (new combination reference)
Libellus hamuliferus var. hamuliferus (Grunow in Cleve & Grunow) De Toni, 1890 accepted as
Navicula hamulifera var. hamulifera Grunow in Cleve & Grunow, 1880 (new combination reference)
Libellus plicatus (Donkin) De Toni, 1890 accepted as
Navicula plicata f. plicata Ehrenberg, 1858 (new combination reference)
Libellus simulans (Donkin) De Toni, 1890 accepted as
Navicula simulans Donkin, 1873 (new combination reference)