Caloneis fenzlii (Grunow) Patrick, 1966 accepted as
Navicula fenzlii Grunow, 1863 (new combination reference)
Caloneis ventricosa var. jenisseyensis (Grunow in Cleve & Grunow) F.W. Mills, 1934 accepted as
Navicula ventricosa var. jenisseyensis Grunow in Cleve & Grunow, 1880 (new combination reference)
Caloneis ventricosa var. kjellmaniana (Grunow in Cleve & Grunow) F.W. Mills, 1934 accepted as
Navicula ventricosa var. kjellmaniana Cleve in Cleve & Grunow, 1880 (new combination reference)
Caloneis ventricosa var. minuta (Grunow) F.W.Mills, 1934 accepted as
Navicula ventricosa f. minuta Grunow, 1880 (new combination reference)
Navicula mirabile (Hustedt) F.W. Mills, 1934 accepted as
Neidium mirabile Hustedt, 1922 (new combination reference)
Navicula rectum (Hustedt) F.W. Mills, 1934 accepted as
Neidium rectum Hustedt, 1922 (new combination reference)
Navicula subovalis var. maxima (Frenguelli) F.W. Mills, 1934 accepted as
Navicula smithii var. maxima Frenguelli, 1929 (new combination reference)
Navicula subtilissima var. baikalensis (Skvortzow & Meyer) F.W. Mills, 1934 (new combination reference)
Navicula subundulata (Grunow) F.W.Mills, 1934 accepted as
Navicula firma var. subundulata Grunow ex A.Schmidt et al., 1877 (new combination reference)
Navicula tenellum (Mayer) F.W. Mills, 1934 accepted as
Neidium tenellum Mayer, 1919 (new combination reference)
Navicula thumii (Cleve) Schütt, 1896 accepted as
Dictyoneis thumii Cleve, 1890 (new combination reference)
Navicula valida var. minor (Østrup) F.W. Mills, 1934 (new combination reference)
Navicula vaszaryi var. oregonica (Cleve) F.W. Mills, 1934 accepted as
Achnanthes vaszaryi var. oregonica Cleve, 1893 (new combination reference)
Navicula ventricosa (Kützing) F.W.Mills, 1934 accepted as
Stauroneis ventricosa var. ventricosa Kützing, 1844 (new combination reference)
Navicula viridis f. hankensis (Skvortzow) F.W. Mills, 1934 (new combination reference)
Navicula viridis var. elliptica (Meister) F.W. Mills, 1934 accepted as
Pinnularia viridis f. elliptica Meister, 1912 (new combination reference)
Neidium affine f. pygmaea (Mayer) F.W. Mills, 1934 (new combination reference)
Neidium affine var. intermedia (Dippel) F.W. Mills, 1934 accepted as
Navicula affinis var. intermedia Dippel, 1905 (new combination reference)
Neidium barbassii F. W. Mills, 1934 (original description)
Neidium borbassii (Pantocsek) F.W. Mills, 1934 (new combination reference)
Neidium dubium var. signata (Pantocsek) F.W. Mills, 1934 accepted as
Navicula dubia var. signata Pantocsek, 1902 (new combination reference)
Neidium iridis var. minor (Otto Müller) F.W. Mills, 1934 (new combination reference)
Neidium magellanicum var. candelariae (Frenguelli) F.W. Mills, 1934 accepted as
Navicula magellanica var. candelariae Frenguelli, 1924 (new combination reference)
Neidium magellanicum var. minor (Frenguelli) F.W. Mills, 1934 (new combination reference)
Neidium pantocsekii (Meister) F.W. Mills, 1934 accepted as
Scolioneis pantocsekii Meister, 1919 (new combination reference)
Neidium productum var. acuta F. W. Mills, 1934 (original description)
Neidium tanganyikae (G.S. West) F.W. Mills, 1934 accepted as
Navicula tanganyikae G.S.West, 1907 (new combination reference)
Neidium topia (Pantocsek) F.W. Mills, 1934 accepted as
Navicula topia Pantocsek, 1902 (new combination reference)
Nitzschia amphioxys f. capitata (Pantocsek) F.W. Mills, 1934 accepted as
Hantzschia amphioxys f. capitata Pantocsek, 1902 (new combination reference)
Nitzschia amphioxys f. hankensis (Skvortzow) F.W. Mills, 1934 (new combination reference)
Nitzschia amphioxys var. crassa (M. Peragallo in Heribaud et al.) F.W. Mills, 1934 accepted as
Hantzschia amphioxys var. crassa M. Peragallo in Héribaud et al., 1920 (new combination reference)
Nitzschia amphioxys var. densistriata (Lauby) F.W. Mills, 1934 (new combination reference)
Nitzschia amphioxys var. hispida (M. Peragallo in Heribaud et al.) F.W. Mills, 1934 accepted as
Hantzschia amphioxys var. hispida M. Peragallo in Héribaud et al., 1920 (new combination reference)
Nitzschia amphioxys var. royatense (Ostrup in Heribaud et al.) F.W. Mills, 1934 accepted as
Hantzschia amphioxys var. royatense Ostrup in Héribaud et al., 1920 (new combination reference)
Nitzschia atlantica (Cleve) F.W. Mills, 1934 accepted as
Nitzschia pungens var. atlantica Cleve, 1897 (new combination reference)
Nitzschia biplacata var. biplacata (Mereschkowsky) F.W. Mills, 1934 accepted as
Nitzschiella biplacata var. biplacata Mereschkowsky, 1902 (new combination reference)
Nitzschia biplacata var. pacifica (Mereschkowsky) F.W. Mills, 1934 accepted as
Nitzschiella biplacata var. pacifica Mereschkowsky, 1901 (new combination reference)
Nitzschia communis f. angustior (A. Cleve) F.W. Mills, 1934 (new combination reference)
Nitzschia crassa (Pantocsek) F.W. Mills, 1934 accepted as
Hantzschia crassa var. crassa Pantocsek, 1902 (new combination reference)
Nitzschia debilis var. crassa (Pantocsek) F.W. Mills, 1934 accepted as
Tryblionella debilis var. crassa Pantocsek, 1902 (new combination reference)
Nitzschia debilis var. validior (Pantocsek) F.W. Mills, 1934 accepted as
Tryblionella debilis var. validior Pantocsek, 1902 (new combination reference)
Nitzschia dubravicensis (Grunow) F.W. Mills, 1934 accepted as
Hantzschia dubravicensis Grunow, 1882 (new combination reference)
Nitzschia hantzschiana var. angustata (Pantocsek) F.W. Mills, 1934 accepted as
Tryblionella hantzschiana var. angustata Pantocsek, 1902 (new combination reference)
Nitzschia hyalina (Grunow in Van Heurck; Grunow) F.W. Mills, 1934 accepted as
Hantzschia hyalina Grunow, 1884 (new combination reference)
Nitzschia kotschii (Grunow) F.W. Mills, 1934 accepted as
Homoeocladia kotschyi Grunow, 1878 (new combination reference)
Nitzschia marina var. leptocephala (Østrup) F.W. Mills, 1934 accepted as
Hantzschia marina var. leptocephala Østrup, 1904 (new combination reference)
Nitzschia schoenfeldii (Hustedt) F.W.Mills, 1934 accepted as
Navicula schoenfeldii f. schoenfeldii Hustedt, 1930 (new combination reference)
Nitzschia sinuata var. angulosa (Lauby) F.W. Mills, 1934 accepted as
Grunowia sinuata var. angulosa Lauby, 1910 (new combination reference)
Synedra tabulata var. hamata (W. Smith) F.W. Mills, 1934 accepted as
Synedra hamata W.Smith, 1853 (new combination reference)