Achnanthepyla Perag., 1921 (original description)
Achnanthepyla arctica var. incurvata (Østrup) Perag., 1921 (new combination reference)
Achnanthepyla baccata Perag., 1921 (original description)
Achnanthepyla bongrainii Perag., 1921 accepted as
Achnanthes bongrainii (M. Peragallo) Mann, 1937 accepted as
Achnanthepyla bongrainii var. bongrainii Perag., 1921 (original description)
Achnanthepyla bongrainii var. bongrainii Perag., 1921 accepted as
Achnanthepyla bongrainii Perag., 1921 accepted as
Achnanthes bongrainii (M. Peragallo) Mann, 1937 (original description)
Achnanthepyla bongrainii var. parallela Perag., 1921 accepted as
Achnanthes bongrainii var. parallela (Peragallo) Frenguelli & Orlando, 1958 (original description)
Achnanthepyla gainii var. gainii Perag., 1921 accepted as
Achnanthes gainii (M. Peragallo) Mann, 1937 (original description)
Achnanthepyla gainii var. ostrupii Perag., 1921 (original description)
Achnanthepyla glabrata var. aucklandica (Grunow in Cleve & Grunow) Perag., 1921 (new combination reference)
Achnanthepyla glabrata var. glabrata (Grunow) Perag., 1921 accepted as
Achnanthepyla glabrata (Grunow) Perag., 1921 (new combination reference)
Achnanthepyla groenlandica (Cleve) Perag., 1921 accepted as
Achnanthes groenlandica (Cleve) Grunow, 1880 (new combination reference)
Achnanthepyla jamalinensis (Grunow in Cleve & Grunow) Perag., 1921 accepted as
Achnanthes jamalinensis Grunow in Cleve & Grunow, 1880 (new combination reference)
Achnanthepyla mesogongyla (Grunow in Cleve & Grunow) Perag., 1921 (new combination reference)
Achnanthepyla minutula (Grunow) Perag., 1921 (new combination reference)
Achnanthepyla simplex Perag., 1921 (original description)
Achnanthepyla temperei (Perag.) Perag., 1921 accepted as
Achnanthes temperei M.Peragallo, 1908 (new combination reference)
Achnanthes antarctica Perag., 1921 (original description)
Achnanthes charcotii M. Peragallo, 1921 (original description)
Achnanthes coarctata f. antarctica M. Peragallo, 1921 (original description)
Achnanthes coarctata var. distorta M. Peragallo, 1921 (original description)
Achnanthes coarctata var. elineata (Lagerstedt) Otto Müller, 1909 accepted as
Achnanthidium coarctatum var. elineatum Lagerstedt, 1873 (new combination reference)
Achnanthes distorta M. Peragallo, 1921 (original description)
Achnanthes muscorum var. minor M. Peragallo, 1921 (original description)
Achnanthes muscorum var. muscorum M. Peragallo, 1921 (original description)
Achnanthes subsenilis var. incurvata ‘Østrup' M. Peragallo, 1921 (taxonomy source)
Actinocyclus excentricus Peragallo, 1921 (original description)
Actinocyclus polygonus var. polygonus M. Peragallo, 1921 (original description)
Amphora bongrainii M. Peragallo, 1921 (original description)
Amphora charcotii M. Peragallo, 1921 (original description)
Amphora gourdonii M.Peragallo, 1921 (original description)
Amphora lanceolata var. angustissima (Van Heurck) M. Peragallo, 1921 accepted as
Amphora angusta var. angustissima Van Heurck, 1909 (new combination reference)
Amphora lanceolata var. aperta M. Peragallo, 1921 (original description)
Amphora lanceolata var. robusta M. Peragallo, 1921 (original description)
Amphora liouvillei M. Peragallo, 1921 (original description)
Amphora petermannii M. Peragallo, 1921 (original description)
Amphora pimenteli M. Peragallo, 1921 (original description)
Amphora racovitzae var. minor Peragallo, 1921 (original description)
Amphora senonquei M. Peragallo, 1921 (original description)
Amphora virgata var. crassa M. Peragallo, 1921 (original description)
Biddulphia belgicae var. belgicae M. Peragallo, 1921 (original description)
Biddulphia belgicae var. lata M. Peragallo, 1921 (original description)
Biddulphia ottomuelleri var. cruciata (Petit) M. Peragallo, 1921 accepted as
Biddulphia cruciata Petit, 1908 (new combination reference)
Biddulphia punctata var. belgicae M. Peragallo, 1921 (original description)
Biddulphia vanheurckii f. spinosa M. Peragallo, 1921 (original description)
Biddulphia vanheurckii f. vanheurckii M. Peragallo, 1921 (original description)
Ceratoneis australis var. australis M. Peragallo, 1921 (original description)
Ceratoneis australis var. gracilis M. Peragallo, 1921 (original description)
Charcotia M. Peragallo, 1921 accepted as
Charcotiella S. Blanco & C.E. Wetzel, 2016 (original description)
Charcotia apollinis (Ehrenberg) M. Peragallo, 1921 accepted as
Coscinodiscus apollinis var. apollinis Ehrenberg, 1844 (new combination reference)
Charcotia australis (Karsten) M. Peragallo, 1921 accepted as
Coscinodiscus australis Karsten, 1905 accepted as
Charcotiella australis (G.Karst) S.Blanco & C.E.Wetzel, 2016 (new combination reference)
Charcotia bifrons (Castracane) M. Peragallo, 1921 accepted as
Coscinodiscus bifrons Castracane, 1886 accepted as
Charcotiella bifrons (Castrac.) S.Blanco & C.E.Wetzel, 2016 (new combination reference)
Charcotia castracanei (Karsten) M. Peragallo, 1921 accepted as
Coscinodiscus castracanei Karsten, 1905 accepted as
Charcotiella castracanei (G.Karst.) S.Blanco & C.E.Wetzel, 2016 (new combination reference)
Charcotia chromoradiatus (Karsten) M. Peragallo, 1921 accepted as
Coscinodiscus chromoradiatus Karsten, 1905 accepted as
Charcotiella chromoradiata (G.Karst.) S.Blanco & C.E.Wetzel, 2016 (new combination reference)
Charcotia decrescens M. Peragallo, 1921 accepted as
Charcotiella decrescens (Perag.) S.Blanco & C.E.Wetzel, 2016 (original description)
Charcotia dispersus M. Peragallo, 1921 accepted as
Charcotiella dispersa (Perag.) S.Blanco & C.E.Wetzel, 2016 (original description)
Charcotia irregularis var. irregularis M. Peragallo, 1921 (original description)
Charcotia irregularis var. partita M. Peragallo, 1921 (original description)
Charcotia janus var. janus (Castracane) M. Peragallo, 1921 accepted as
Coscinodiscus janus Castracane, 1886 accepted as
Charcotiella janus (Castrac.) S.Blanco & C.E.Wetzel, 2016 (new combination reference)
Charcotia janus var. planus (Karsten) M. Peragallo, 1921 accepted as
Coscinodiscus planus Karsten, 1905 (new combination reference)
Charcotia micropunctatus M. Peragallo, 1921 accepted as
Charcotiella micropunctata (Perag.) S.Blanco & C.E.Wetzel, 2016 (original description)
Charcotia minor M. Peragallo, 1921 accepted as
Charcotiella minor (Perag.) S.Blanco & C.E.Wetzel, 2016 (original description)
Charcotia ornatus var. excentrica M. Peragallo, 1921 (original description)
Charcotia ornatus var. ornatus (Van Heurck) M. Peragallo, 1921 accepted as
Actinocyclus polygonus var. ornatus Van Heurck, 1909 accepted as
Charcotiella ornata (Van Heurck) S.Blanco & C.E.Wetzel, 2016 (new combination reference)
Charcotia polygonus M. Peragallo, 1921 (original description)
Charcotia valdiviae M. Peragallo, 1921 accepted as
Charcotiella valdiviae (Perag.) S.Blanco & C.E.Wetzel, 2016 (original description)
Cocconeis charcotii M. Peragallo, 1921 (original description)
Cocconeis formosa var. antarctica M. Peragallo, 1921 (original description)
Cocconeis gautieri var. craticula M. Peragallo, 1921 (original description)
Cocconeis gautieri var. maxima M. Peragallo, 1921 (original description)
Cocconeis gautieri var. minor M. Peragallo, 1921 (original description)
Cocconeis gautieri var. ornata M. Peragallo, 1921 (original description)
Cocconeis imperatrix var. kerguelensis (Petit) M. Peragallo, 1921 accepted as
Cocconeis kerguelensis Petit, 1888 (new combination reference)
Cocconeis imperatrix var. opposita M. Peragallo, 1921 (original description)
Cocconeis pinnata var. plena Peragallo, 1921 (original description)
Cocconeis schuetii var. litigiosa (Van Heurck) M. Peragallo, 1921 accepted as
Cocconeis litigiosa van Heurck, 1909 (new combination reference)
Coscinodiscus actinocycloides M. Peragallo, 1921 (original description)
Coscinodiscus belgicae var. belgicae M. Peragallo, 1921 (original description)
Coscinodiscus belgicae var. occulata M. Peragallo, 1921 (original description)
Coscinodiscus charcotii M. Peragallo, 1921 (original description)
Coscinodiscus gainii M. Peragallo, 1921 (original description)
Coscinodiscus oculusiridis f. subbulliens M. Peragallo, 1921 (original description)
Coscinodiscus oculusiridis var. australis M. Peragallo, 1921 (original description)
Coscinodiscus oculusiridis var. excentrica M. Peragallo, 1921 (original description)
Coscinodiscus omphalanthus var. minor M. Peragallo, 1921 (original description)
Coscinodiscus pacificus var. australis M. Peragallo, 1921 (original description)
Coscinodiscus pseudoradiolatus M. Peragallo, 1921 (original description)
Eunotia tridentula var. ventricosa M. Peragallo, 1921 (original description)
Fragilaria bongrainii M. Peragallo, 1921 (original description)
Fragilaria californica var. antarctica M. Peragallo, 1921 (original description)
Fragilaria californica var. intermedia M. Peragallo, 1921 (original description)
Fragilaria charcotii M. Peragallo, 1921 (original description)
Fragilaria islandica var. producta Peragallo, 1921 (original description)
Fragilaria islandica var. stricta Peragallo, 1921 (original description)
Fragilaria sublinearis var. ambigua Peragallo, 1921 (original description)
Fragilaria vanheurckii Peragallo, 1921 (original description)
Gomphonema charcotii var. charcotii M. Peragallo, 1921 (original description)
Gomphonema groenlandicum var. clusa M. Peragallo, 1921 (original description)
Gomphonema kamtschaticum var. antarcticum M. Peragallo, 1921 (original description)
Grammatophora antarctica M. Peragallo, 1921 (original description)
Grammatophora charcotii M. Peragallo, 1921 (original description)