Aulacocystis A.H. Hassall, 1845 (original description)
Aulacocystis pellucida (Kützing) Hassall, 1845 accepted as
Frustulia pellucida Kützing, 1833 (new combination reference)
Cocconema ventricosum (Agardh) Hassall, 1845 accepted as
Cymbella ventricosa f. ventricosa Agardh, 1830 (new combination reference)
Cymbella arcus (Ehrenberg) Hassall, 1845 accepted as
Navicula arcus Ehrenberg, 1836 (new combination reference)
Cymbella turgida (Ehrenberg) Hassall, 1845 accepted as
Navicula turgida Ehrenberg, 1830 (new combination reference)
Cymbella zebra (Ehrenberg) Hassall, 1845 accepted as
Navicula zebra Ehrenberg, 1833 (new combination reference)
Exilaria capitata (Ehrenberg) Hassall, 1845 accepted as
Synedra capitata f. capitata Ehrenberg, 1836 (new combination reference)
Exilaria lunaris (Ehrenberg) Hassall, 1845 accepted as
Synedra lunaris var. lunaris Ehrenberg, 1832 (new combination reference)
Gyrosigma A.H. Hassall, 1845 (original description)
Gyrosigma hippocampus (Ehrenberg) Hassall, 1845 accepted as
Navicula hippocampus var. hippocampus Ehrenberg, 1838 (new combination reference)
Melosira arenosa Moore ex Hassall, 1852 (original description)
Navicula lanceolata sensu Hassall, 1845 (original description)
Navicula palea Hassall, 1845 (original description)
Nitzschia A.H. Hassall, 1845 (original description)
Nitzschia elongata var. elongata Hassall, 1845 (original description)
Podosphenia oculata Hassall, 1845 (original description)
Sphaerophora globulifera Hassall, 1845 (original description)
Sphinctocystis A.H. Hassall, 1845 (original description)
Sphinctocystis librilis (Ehrenberg) Hassall, 1845 (new combination reference)
Surirella jenneri Hassall, 1845 (original description)
Vesiculifera A.H. Hassall, 1845 (original description)
Vesiculifera composita Hassall, 1845 (original description)