Actinocyclus octonarius var. crassus (W.Smith) Hendey, 1954 accepted as
Eupodiscus crassus W.Smith, 1853 (new combination reference)
Actinocyclus octonarius var. ralfsii (W.Smith) Hendey, 1954 accepted as
Eupodiscus ralfsii var. ralfsii W. Smith, 1856 (new combination reference)
Actinocyclus octonarius var. sparsus (Gregory) Hendey, 1954 accepted as
Eupodiscus sparsus Gregory, 1857 (new combination reference)
Actinocyclus octonarius var. tenellus (Brébisson) Hendey, 1954 accepted as
Eupodiscus tenellus Brébisson, 1854 (new combination reference)
Epithemia adnata var. proboscidea (Kützing) Hendey, 1954 accepted as
Epithemia proboscidea Kützing, 1844 (new combination reference)
Navicula cyprinus var. linearis (Hustedt) Hendey, 1954 (new combination reference)
Navicula cyprinus var. rostrata (Hustedt) Hendey, 1954 accepted as
Navicula digitoradiata var. rostrata Hustedt, 1939 (new combination reference)