Actinocyclus divisus (Grunow) Hustedt, 1958 accepted as Coscinodiscus divisus var. divisus Grunow, 1878 (new combination reference)
Charcotia actinochilus (Ehrenberg) Hustedt, 1958 accepted as Coscinodiscus actinochilus Ehrenberg, 1844 (new combination reference)
Coscinodiscus pseudodenticulatus Hustedt, 1958 (original description)
Coscinodiscus ritscheri Hustedt, 1958 (original description)
Fragilariopsis ritscheri Hustedt, 1958 (original description)
Fragilariopsis separanda Hustedt, 1958 (original description)
Fragilariopsis vanheurckii (Peragallo) Hustedt, 1958 accepted as Fragilaria vanheurckii Peragallo, 1921 (new combination reference)
Nitzschia compacta Hustedt, 1958 (original description)
Nitzschia decipiens Hustedt, 1958 (original description)
Nitzschia medioconstricta Hustedt, 1958 (original description)
Nitzschia turgidula Hustedt, 1958 (original description)
Thalassiosira gracilis (Karsten) Hustedt, 1958 accepted as Coscinodiscus gracilis Karsten, 1905 (new combination reference)