Chaetoceros brightwellii (Cleve) Cleve, 1901 accepted as
Chaetoceros borealis var. brightwellii (Cleve) Cleve (new combination reference)
Chaetoceros decipiens var. grunowii (Schütt) F.W. Mills, 1933 accepted as
Chaetoceros grunowii F.Schütt, 1895 (new combination reference)
Chaetoceros mamillosa (Grunow in Cleve & Grunow) F.W. Mills, 1933 accepted as
Chaetoceros furcillatus var. mamillosa Grunow in Cleve & Grunow, 1880 (new combination reference)
Chaetoceros valdivae (Karsten) Mills, 1933 accepted as
Corethron valdiviae Karsten, 1904 (new combination reference)
Charcotia apollinis (Ehrenberg) Mills, 1933 accepted as
Coscinodiscus apollinis var. apollinis Ehrenberg, 1844 (new combination reference)
Climaconeis linearis Janisch & Rabenhorst according to Mills, 1933 accepted as
Climacosphenia linearis Janisch & Rabenhorst, 1863 (original description)
Cocconeis belawani (Meister) Kolbe, 1957 accepted as
Disconeis belawani Meister, 1932 (new combination reference)
Cocconeis fenestratus (Greville) Mills, 1933 accepted as
Campylodiscus fenestratus Greville, 1857 (new combination reference)
Cocconeis gibberula var. angustior (Grunow) F.W.Mills, 1933 accepted as
Achnanthes gibberula var. angustior Grunow in Cleve, 1895 accepted as
Crenotia angustior (Grunow) Wojtal (new combination reference)
Cocconeis mammalis (Castracane) F.W. Mills, 1933 accepted as
Rhaphoneis mammalis Castracane, 1886 (new combination reference)
Cocconeis nigricans var. denticulata F.W. Mills, 1933 (original description)
Cocconeis placentula f. minor (Pantocsek) F.W. Mills, 1933 accepted as
Cocconeis lineata var. minor Pantocsek, 1892 (new combination reference)
Cocconeis toniana Pantocsek according to Mills (original description)
Cocconema botellum (Lagerstedt) Cleve & Möller Type no. 59 according to Mills, 1878 accepted as
Cymbella variabilis var. botellus Lagerstedt, 1873 (new combination reference)
Cocconema maculata Kützing accepted as
Frustulia maculata Kützing, 1833 (new combination reference)
Cymbella biceps (Ehrenberg) F.W. Mills, 1933 accepted as
Cocconema biceps Ehrenberg, 1845 (new combination reference)
Goniothecium hispidum var. monicae (Grunow in Van Heurck) F.W. Mills, 1933 accepted as
Chaetoceros monicae Grunow in Van Heruck, 1883 (new combination reference)