Achnanthes submarina Hustedt, 1956 (original description)
Actinocyclus distinguendus Hustedt, 1956 (original description)
Actinocyclus tropicus Hustedt, 1956 (original description)
Amphora tumida Hustedt, 1956 (original description)
Chaetoceros similoides Hustedt, 1956 (original description)
Diploneis minima Hustedt, 1956 (original description)
Fragilaria gessneri Hustedt, 1956 (original description)
Fragilaria obtusa Hustedt, 1956 (original description)
Gyrosigma procerum Hustedt, 1956 (original description)
Navicula ilopangoensis Hustedt, 1956 (original description)
Navicula teneroides Hustedt, 1956 (original description)
Navicula tersa Hustedt, 1956 (original description)
Navicula venezuelensis Hustedt, 1956 (original description)
Navicula virginalis Hustedt, 1956 (original description)
Navicula zonata Hustedt, 1956 (original description)
Nitzschia angustecarinata Hustedt, 1956 (original description)
Nitzschia elegans Hustedt, 1956 (original description)
Nitzschia lancettuloides Hustedt, 1956 (original description)
Nitzschia pseudostagnorum Hustedt, 1956 (original description)
Nitzschia rostellata Hustedt in Schmidt et al., 1922 (original description)
Nitzschia simplex Hustedt, 1956 (original description)
Nitzschia submediocris Hustedt, 1956 (original description)
Plagiogramma tenuissima Hustedt, 1956 (original description)
Stauroneis submarina Hustedt, 1956 (original description)
Stephanopyxis costata (Greville) Hustedt, 1956 accepted as
Melosira costata Greville, 1866 (new combination reference)
Surirella gessneri Hustedt, 1956 (original description)
Thalassiosira gessneri Hustedt, 1956 (original description)
Thalassiosira salvadoriana Hustedt, 1956 (original description)
Thalassiosira simplex Hustedt, 1956 (original description)