Amphiprora decussata var. gigantea (Grunow) H. Peragallo in H. Peragallo & M. Peragallo, 1898 accepted as Amphiprora gigantea var. gigantea Grunow, 1860 (new combination reference)
Amphora costata var. inflata (Grunow) H.Peragallo & M.Peragallo, 1897-1908 accepted as Amphora inflata Grunow, 1875 (new combination reference)
Amphora perstriata var. minor Peragallo & Peragallo, 1897-1908 (original description)
Bacteriastrum varians var. hyalina (Lauder) Peragallo & Peragallo, 1897-1908 accepted as Bacteriastrum hyalinum var. hyalinum Lauder, 1864 (new combination reference)
Bellerochea malleus var. biangulata H.Peragallo & M.Peragallo, 1908 (original description)
Berkeleya micans var. fragilis (Greville) Grunow ex H.Peragallo & M.Peragallo, 1897 accepted as Berkeleya fragilis var. fragilis Greville, 1823-1828 (new combination reference)
Berkeleya rutilans var. obtusa (Greville) Peragallo & Peragallo, 1897-1908 (1897) accepted as Monema obtusum Greville, 1828 (new combination reference)
Berkeleya rutilans var. parasitica (Griffith in Harvey) Peragallo & Peragallo, 1897-1908 (1897) accepted as Schizonema parasiticum var. parasiticum Griffith in Harvey, 1841 (new combination reference)
Caloneis liber f. convexa (Cleve) Peragallo & Peragallo, 1897-1908 accepted as Caloneis liber f. convexa Cleve, 1894 (new combination reference)
Campylodiscus biangulatus var. lorenzianus (Grunow) H.Peragallo & M.Peragallo, 1899 accepted as Campylodiscus lorenzianus Grunow, 1862 (new combination reference)
Chaetoceros distans var. laciniosa (Schütt) Peragallo & Peragallo, 1897-1908 accepted as Chaetoceros laciniosus f. laciniosus Gran, 1897 (new combination reference)
Cocconeis fluminensis var. subimpleta H.Peragallo & M.Peragallo, 1897 (original description)
Cocconeis grata var. nummularia (Greville) Peragallo & H. Peragallo, 1897-1908 accepted as Navicula nummularia Greville, 1859 (new combination reference)
Cocconeis maxima var. niceaensis Peragallo & Peragallo, 1897-1908 (original description)
Cocconeis scutellum var. riparia (Brun in Schmidt et al.) Peragallo & Peragallo, 1897-1908 accepted as Cocconeis riparia Brun in Schmidt et al., 1894 (new combination reference)
Coscinodiscus excentricus f. catenata (Gran) Peragallo & Peragallo, 1897-1908 accepted as Coscinodiscus excentricus var. catenata Gran, 1897 (new combination reference)
Coscinodiscus giganteus Peragallo & Peragallo, 1897-1908 (original description)
Coscinodiscus lineatus f. polychorda (Gran) Peragallo & Peragallo, 1897-1908 accepted as Coscinodiscus polychordus Gran, 1897 (new combination reference)
Cyclosira H. Peragallo & M. Peragallo, 1907 (original description)
Cyclosira bergonii H. Peragallo in Peragallo & Peragallo, 1897-1908 (original description)
Diatoma elongatum var. densestriata (Grunow in Van Heurck) M. Peragallo, 1897-1903 accepted as Diatoma tenue var. densestriata Grunow in Van Heurck, 1881 (new combination reference)
Dimerosira H. Peragallo in H. Peragallo & M. Peragallo, 1901 (original description)
Diploneis fusca var. fuscata (De Toni) M. Peragallo, 1903 accepted as Navicula fusca var. fuscata De Toni, 1891 (new combination reference)
Epithemia gibba var. hungarica (Pantocsek) M. Peragallo, 1897-1903 (new combination reference)
Eunotia pumilio (Ehrenberg) M. Peragallo, 1897-1903 accepted as Amphicampa pumilio Ehrenberg, 1870 (new combination reference)
Eupleuria australis (Ehrenberg) M. Peragallo, 1897-1903 accepted as Surirella australis Ehrenberg, 1843 (new combination reference)
Gonioceros H. Peragallo in H. Peragallo & M. Peragallo, 1907 (original description)
Gonioceros armatum (T. West) Peragallo & Peragallo, 1897-1908 (1897) accepted as Chaetoceros armatus T.West, 1860 (new combination reference)
Grammatophora adriatica var. minima (Grunow) Peragallo & Peragallo, 1897-1908 accepted as Grammatophora minima Grunow, 1862 (new combination reference)
Grammatophora oceanica f. minima Peragallo & Peragallo, 1897-1908 (original description)
Grammatophora oceanica f. minima (Grunow) Peragallo & Peragallo, 1897-1908 accepted as Grammatophora minima Grunow, 1862 (new combination reference)
Grammatophora serpentina var. bacillaris Peragallo & Peragallo, 1897-1908 (original description)
Grunowia denticulata var. denticula (Grunow in Cleve & Grunow) Peragallo & Peragallo, 1897-1908 (new combination reference)
Hyalodiscus subtilis var. scotica (Kützing) Peragallo & Peragallo, 1897-1908 accepted as Cyclotella scotica Kützing, 1844 (new combination reference)
Lampriscus orbiculatus var. elongata Peragallo & Peragallo, 1897-1908 (original description)
Lithodesmium intricatum (T. West) Peragallo & Peragallo, 1897-1908 accepted as Triceratium intricatum T.West, 1860 (new combination reference)
Melosira spiralis var. sphaerica Héribaud & M. Peragallo in Héribaud, 1902 (original description)
Melosira sulcata f. radiata (Grunow) Peragallo & Peragallo, 1897-1908 (new combination reference)
Melosira sulcata f. radiata (Grunow) Peragallo & Peragallo, 1908 (new combination reference)
Navicula abrupta var. atlantica (Schmidt) Peragallo & Peragallo, 1897-1908 accepted as Navicula lyra f. atlantica Schmidt, 1874 (new combination reference)
Navicula clavata var. wrightii (O'Meara) H.Peragallo & M.Peragallo, 1908 accepted as Navicula wrightii O'Meara, 1867 (new combination reference)
Navicula foveana Peragallo & Peragallo, 1897-1908 (original description)
Navicula fusca var. tenuipunctata (Cleve) Peragallo & Peragallo, 1897-1908 accepted as Diploneis fusca var. tenuipunctata Cleve, 1894 (new combination reference)
Navicula lyra f. robertsoniana sensu Peragallo & Peragallo, 1897-1908 (original description)
Navicula lyra var. densestriata Peragallo & Pergallo, 1897-1903 (original description)
Navicula mediterranea var. scaligera Peragallo & Peragallo, 1897-1908 (original description)
Navicula multicostata var. minuta (Cleve) Peragallo & Peragallo, 1897-1908 accepted as Diploneis crabro var. minuta Cleve, 1894 (new combination reference)
Navicula multicostata var. perpusilla (Cleve) Peragallo & Pergallo, 1897-1908 accepted as Diploneis crabro var. perpusilla Cleve, 1894 (new combination reference)
Navicula pandura var. limitanea (Schmidt in Schmidt et al.) Peragallo & Peragallo, 1897-1908 accepted as Navicula limitanea Schmidt in Schmidt et al., 1875 (new combination reference)
Navicula pulchra (Østrup) Peragallo, 1897-1908 accepted as Pinnularia pulchra f. pulchra Østrup, 1897 (new combination reference)
Navicula quadratarea var. fluminensis (Grunow) Peragallo & Peragallo, 1897-1908 accepted as Navicula fluminensis var. fluminensis Grunow, 1860 (new combination reference)
Navicula robusta var. perlonga (Pantocsek; Pantocsek) M. Peragallo, 1903 accepted as Navicula perlonga Pantocsek, 1889 (new combination reference)
Navicula scopulorum var. perlonga sensu Peragallo & Peragallo, 1897-1908 (original description)
Navicula setacea (Kützing) Cleve, 1897 accepted as Micromega setaceum var. setaceum Kützing, 1844 (new combination reference)
Navicula stauroptera (J.W. Bailey) Peragallo & Peragallo, 1897-1908 accepted as Amphora stauroptera J.W.Bailey, 1854 (new combination reference)
Navicula subretusa Peragallo & Peragallo, 1897-1908 (original description)
Navicula vacillans f. typica Peragallo & Peragallo, 1897-1908 (original description)
Navicula vacillans var. excisa (Schmidt) Peragallo & Peragallo, 1897-1908 accepted as Navicula fusca var. excisa Schmidt, 1874 (new combination reference)
Navicula vacillans var. minuta (Grunow in Van Heurck) Peragallo & Peragallo, 1897-1908 (new combination reference)
Nitzschia frauenfeldii var. major Tempère in Peragallo, 1908 (original description)
Nitzschia insignis f. typica Peragallo & Peragallo, 1897-1908 (original description)
Nitzschia longa var. clarissima Peragallo & Peragallo, 1897-1908 (original description)
Nitzschiella incurva var. densistriata Peragallo & Peragallo, 1897-1908 (original description)
Nitzschiella longissima var. closterium (Ehrenberg) Peragallo & Peragallo, 1897-198 accepted as Ceratoneis closterium Ehrenberg, 1839 (new combination reference)
Orthoneis excentrica (Donkin) Peragallo & Peragallo, 1908 accepted as Cocconeis excentrica Donkin, 1858 (new combination reference)
Orthoneis ovata var. intermedia Peragallo & Peragallo, 1897-1908 (original description)
Pseudo-nitzschia H. Peragallo in H. Peragallo & M. Peragallo, 1900 (original description)
Pseudonitzschia sicula var. migrans (Cleve) Peragallo & Peragallo, 1897-1908 accepted as Nitzschia migrans Cleve, 1897 (new combination reference)
Rhizosolenia alata f. corpulenta (Cleve) Peragallo & Peragallo, 1897-1908 accepted as Rhizosolenia alata var. corpulenta Cleve, 1897 (new combination reference)
Rhopalodia musculus f. typica Peragallo & Peragallo, 1897-1908 (original description)
Rhopalodia musculus var. succincta Peragallo & Peragallo, 1897-1908 (original description)
Schizonema grevillei var. comoides (Dillwyn; Agardh) Peragallo & Peragallo, 1897-1908 (new combination reference)
Schizonema ramosissimum var. amplius (Kutzing in litt., Kutzing, 1849; Grunow in Van Heurck) Peragallo & Peragallo, 1897-1908 accepted as Schizonema amplius (Kützing) Grunow, 1880 (new combination reference)
Smithiella H. Peragallo in H. Peragallo & M. Peragallo, 1901 (original description)
Stenopterobia elongata Brebisson in Peragallo & Peragallo, 1897-1908 (original description)
Surirella ovalis var. brightwellii (W.Smith) H.Peragallo & M.Peragallo, 1899 accepted as Surirella brightwellii W.Smith, 1853 (new combination reference)
Surirella smithii var. medulica Peragallo & Peragallo, 1899-1901 (original description)
Synedra crystallina var. dalmatica (Kutzing; Grunow in Van Heurck) Peragallo & Peragallo, 1897-1908 accepted as Synedra dalmatica Kützing, 1844 (new combination reference)
Synedra laevigata var. provincialis Peragallo & Peragallo, 1897-1908 (original description)
Synedra superba sensu Peragallo & Peragallo, 1897-1908 (original description)
Synedrosphenia clavata (Greville) Peragallo & Peragallo, 1897-1908 accepted as Synedra clavata Greville, 1865 (new combination reference)
Tetracyclus emarginatus var. crassa Héribaud & M. Peragallo, 1902 (original description)
Trachyneis aspera var. pulchella sensu Peragallo & Peragallo, 1897-1908 (original description)
Triceratium antediluviana var. minor Peragallo & Peragallo, 1897-1908 (original description)
Triceratium antediluviana var. tessellata (Shadbolt) Peragallo & Peragallo, 1897-1908 accepted as Amphitetras tessellata Shadbolt, 1854 (new combination reference)
Triceratium graeffianum (Witt) M. Peragallo, 1897 accepted as Amphitetras graeffeiana Witt, 1873 (new combination reference)
Triceratium imperiale (Walker in Walker & Chase) M. Peragallo, 1897 (new combination reference)
Triceratium radiatum (Greville) M. Peragallo, 1897 accepted as Amphitetras radiata Greville, 1862 (new combination reference)
Trigonium arcticum f. campechiana Peragallo & Peragallo, 1897-1908 (original description)
Trigonium arcticum var. formosa Peragallo & Peragallo, 1897-1908 (original description)
Trigonium punctatum (Brightwell) A.Mann, 1925 accepted as Triceratium punctatum f. punctatum Brightwell, 1856 (new combination reference)
Trigonium repletum Peragallo & Peragallo, 1908 (original description)