Cyclotella operculata f. rectangula Kützing according to Mills, 1934 (original description)
Cyclotella operculata var. rectangulata Kützing according to Mills, 1934 (original description)
Cymatogonia annulata (Wallich) F.W. Mills, 1934 accepted as
Triceratium annulatum Wallich, 1858 (new combination reference)
Cymatopleura solea var. gracilis (Pantocsek) F.W. Mills, 1934 accepted as
Cymatopleura gracilis Pantocsek, 1892 (new combination reference)
Cymbella affinis f. excisa (Kützing) Grunow, 1882 accepted as
Cymbella excisa Kützing, 1844 (taxonomy source)
Cymbella alpina var. minor (Brun & Héribaud in Héribaud) Mills, 1934 accepted as
Cymbella alpina f. minor Brun & Héribaud in Héribaud, 1893 (new combination reference)
Cymbella avenica 'Brébisson' Mills, 1934 (original description)
Cymbella boeckii (Grunow) F.W.Mills, 1934 accepted as
Cocconema boeckii Grunow, 1875 (new combination reference)
Cymbella florentina (Grunow) F.W. Mills, 1934 † accepted as
Cymbella subaequalis var. florentina Grunow, 1880 † (new combination reference)
Cymbella florentina f. ceylonica (Skvortzow) F.W. Mills, 1934 accepted as
Cymbella aequalis f. ceylonica Skvortzow, 1930 (new combination reference)
Cymbella grandi (Héribaud) F.W. Mills, 1934 accepted as
Encyonema grandi Héribaud, 1903 (new combination reference)
Cymbella grossestriata var. tanganyikae (G.S. West) F.W. Mills, 1934 accepted as
Cocconema grossestriata var. tanganyikae G.S. West, 1907 (new combination reference)
Cymbella helvetica var. hungarica (Pantocsek) F.W. Mills, 1934 accepted as
Cymbella cistula var. hungarica Pantocsek, 1892 (new combination reference)
Cymbella inaequalis "W. Smith in Greville, 1855" according to Mills, 1934 (taxonomy source)
Cymbella intermedia Héribaud, 1908 accepted as
Encyonema intermedium Héribaud, 1903 (new combination reference)
Cymbella martyi (Héribaud) F.W. Mills, 1934 accepted as
Cymatopleura martyi Héribaud, 1903 (new combination reference)
Cymbella nana (Hantzsch) Gutwinski, 1903 accepted as
Cocconema nanum Hantzsch, 1862 (new combination reference)
Denticula elegans var. ocellata (W.Smith) Grunow, 1882-1885 accepted as
Denticula ocellata W.Smith, 1856 (new combination reference)
Diatoma boulei var. fossilis (Lauby) F.W. Mills, 1934 accepted as
Diatoma boulei f. fossilis Lauby, 1910 (new combination reference)
Diatoma boulei var. mesodon A.Lauby accepted as
Diatoma boulei f. mesodon Lauby, 1910 (new combination reference)
Diatoma capitata (M. Peragallo in Tempère & Peragallo) F.W. Mills, 1934 accepted as
Diatoma tenue var. capitata M. Peragallo in Tempère & Peragallo, 1909 (new combination reference)