Amphiprora medulica var. medulica H. Peragallo in H. Peragallo & M. Peragallo, 1898 (original description)
Amphiprora pulchra var. pulchella H.Peragallo, 1898 (original description)
Amphora arenaria var. permagna (Pantocsek) H. Peragallo & M. Peragallo, 1898 accepted as Amphora permagna Pantocsek, 1889 (new combination reference)
Amphora egregia var. exornata (Janisch in Schmidt et al.) H. Peragallo & M. Peragallo, 1898 accepted as Amphora exornata Janisch in Schmidt et al., 1876 (new combination reference)
Amphora egregia var. ininterrupta H. Peragallo & M. Peragallo, 1898 (original description)
Amphora egregia var. polita (Cleve) H. Peragallo & M. Peragallo, 1898 accepted as Amphora inelegans var. polita Cleve, 1895 (new combination reference)
Amphora formosa var. studeri (Janisch in Schmidt et al.) H. Peragallo & M. Peragallo, 1898 accepted as Amphora studeri Janisch in Schmidt et al., 1876 (new combination reference)
Amphora graeffii var. minor H. Peragallo & M. Peragallo, 1898 (original description)
Amphora mexicana f. minima H. Peragallo & M. Peragallo, 1898 (original description)
Amphora mexicana f. minor H. Peragallo & M. Peragallo, 1898 (original description)
Amphora obtusa var. rectangulata H. & M. Perag, 1898 (original description)
Amphora peragalli var. balearica H. Peragallo & M. Peragallo, 1898 (original description)
Amphora peragalli var. catalaunica H. Peragallo & M. Peragallo, 1898 (original description)
Amphora proteus var. maxima H.Peragallo (original description)
Amphora proteus var. oculata H.Peragallo, 1898 (original description)
Amphora pulchella H.Perag. & M.Perag., 1898 (original description)
Amphora pusio var. parvula (Flogel) H. Peragallo & M. Peragallo, 1898 accepted as Amphora proteus var. parvula Flögel, 1873 (new combination reference)
Amphora robusta var. hemicostata H.Peragallo (original description)
Amphora schmidtii var. minor H.Peragallo (original description)
Amphora sulcata f. sulcata H. Peragallo in H. Peragallo & M. Peragallo, 1898 (original description)
Auricula adriatica H. Peragallo & M. Peragallo, 1898 (original description)
Auricula dubia H.Peragallo, 1898 (original description)
Donkinia recta var. lorenzii (Grunow) H.Peragallo & M.Peragallo, 1898 accepted as Pleurosigma lorenzii Grunow, 1860 (new combination reference)
Donkinia recta var. minuta (Donkin) H.Peragallo & M.Peragallo, 1898 accepted as Pleurosigma minutum Donkin, 1858 (new combination reference)
Navicula bialbata H. Peragallo & M. Peragallo, 1898 (original description)
Navicula carinifera f. major H. Peragallo & M. Peragallo, 1898 (original description)
Navicula granulata var. constricta H. Peragallo & M. Peragallo, 1898 (original description)
Navicula hennedyi var. campechiana (Grunow in Schmidt et al.) H. Peragallo & M. Peragallo, 1898 accepted as Navicula californica var. campechiana Grunow in Schmidt et al., 1874 (new combination reference)
Navicula hennedyi var. crassa H. Peragallo & M. Peragallo, 1898 (original description)
Navicula hennedyi var. intermedia H. Peragallo & M. Peragallo, 1898 (original description)
Navicula maculosa H. Peragallo & M. Peragallo, 1898 (original description)
Pleurosigma acuminatum var. gallica (Grunow in Van Heurck) H. Peragallo & M. Peragallo, 1898 accepted as Pleurosigma scalprum var. gallicum Grunow in Van Heurck, 1880-1885 (new combination reference)
Pleurosigma diminutum var. constricta (Grunow in Cleve & Grunow) H. Peragallo & M. Peragallo, 1898 accepted as Pleurosigma balticum var. constrictum Grunow in Cleve & Grunow, 1880 (new combination reference)
Pleurosigma longum var. lanceolata H. Peragallo & M. Peragallo, 1898 (original description)
Pleurosigma obscurum var. macilentum H. Peragallo in H. Peragallo & M. Peragallo, 1898 (original description)
Pleurosigma pulchrum var. mediterranea (Grunow in Cleve & Grunow) H. Peragallo & M. Peragallo, 1898 accepted as Pleurosigma obscurum var. mediterranea Grunow in Cleve & Grunow, 1880 (new combination reference)
Pleurosigma spenceri f. arnottii (Grunow in Cleve & Grunow) H. Peragallo & M. Peragallo, 1898 accepted as Pleurosigma spenceri var. arnottii Cleve & Grunow, 1880 (new combination reference)
Pleurosigma spenceri f. curvula (Grunow in Cleve & Grunow) H. Peragallo & M. Peragallo, 1898 accepted as Pleurosigma spenceri f. curvula Grunow in Cleve & Möller, 1879 (new combination reference)
Pleurosigma spenceri f. smithii (Grunow in Cleve & Grunow) H. Peragallo & M. Peragallo, 1898 accepted as Pleurosigma spencerii var. smithii Grunow in Cleve & Grunow, 1880 (new combination reference)
Pleurosigma subsalinum H.Peragallo, 1891 accepted as Pleurosigma spenceri var. subsalinum H. Peragallo, 1891 (new combination reference)
Rhoicosigma oceanicum f. minor H. Peragallo & M. Peragallo, 1898 (original description)
Trachyneis aspera var. minuta H. Peragallo & M. Peragallo, 1898 (original description)
Trachyneis robusta (Petit) H. Peragallo & M. Peragallo, 1898 accepted as Stauroneis robusta Petit, 1877 (new combination reference)
Trachyneis schmidtiana (Grunow in Schmidt et al.) H. Peragallo & M. Peragallo, 1898 accepted as Navicula schmidtiana Grunow in Schmidt et al., 1876 (new combination reference)
Tropidoneis lepidoptera var. mediterranea Peragallo, 1897 (original description)
Tropidoneis lepidoptera var. robusta H.Peragallo & M.Peragallo, 1898 (original description)
Tropidoneis maxima var. adriatica (Cleve) H. Peragallo & M. Peragallo, 1898 accepted as Tropidoneis adriatica Cleve, 1894 (new combination reference)
Tropidoneis maxima var. gracilis H. Peragallo & M. Peragallo, 1898 (original description)