Eunotia minima (Heiden & Kolbe) F.W. Mills, 1934 accepted as
Euodia minima Heiden & Kolbe, 1928 (new combination reference)
Eunotia praerupta var. herkiniensis (Grunow in Van Heurck) F.W. Mills, 1934 accepted as
Eunotia bigibba var. herkiniensis Grunow in Van Heurck, 1881 (new combination reference)
Fragilaria construens f. fossilis (Pantocsek) F.W. Mills, 1934 accepted as
Staurosira venter var. fossilis Grunow ex Pantocsek, 1889 (new combination reference)
Fragilaria grunowii (Pantocsek) F.W. Mills, 1934 accepted as
Staurosira grunowii var. grunowii Pantocsek, 1892 (new combination reference)
Fragilaria kerguelensis (O'Meara) Cleve, 1901 accepted as
Terebraria kerguelensis E.O'Meara, 1876 † (new combination reference)
Fragilaria pinnata var. diatomacea (Grunow) F.W. Mills, 1934 accepted as
Fragilaria mutabilis var. diatomacea Grunow, 1862 (new combination reference)
Fragilaria vasta (Pantocsek) F.W. Mills, 1934 accepted as
Staurosira vasta Pantocsek, 1892 (new combination reference)
Fragilaria venter var. fossilis (Pantocsek) F.W. Mills, 1934 accepted as
Staurosira venter var. fossilis Grunow ex Pantocsek, 1889 (new combination reference)
Frustulia rollandi (Lauby) F.W. Mills, 1934 accepted as
Vanheurckia rollandi Lauby, 1910 (new combination reference)
Frustulia vulgaris var. ceylonica (Skvortzow) F.W. Mills, 1934 accepted as
Frustulia ceylonica Skvortzow, 1930 (new combination reference)
Hemidiscus cuneiformis var. curvirotunda (Tempère & Brun in Brun & Tempère) F.W. Mills, 1934 accepted as
Euodia inornata var. curvirotunda Tempère & Brun in Brun & Tempère, 1889 (new combination reference)