Amphora constricta (Ehrenberg) Carruthers, 1864 accepted as
Amphiprora constricta Ehrenberg, 1843 (new combination reference)
Cocconeis scutellum var. speciosa (Gregory) Cleve-Euler, 1953 accepted as
Cocconeis speciosa var. speciosa Gregory, 1855 (new combination reference)
Diatoma elongatum var. distortum Carruthers, 1864 (original description)
Diatoma elongatum var. inflatum Carruthers, 1864 (original description)
Diatoma elongatum var. minutum Carruthers, 1864 (original description)
Dimeregramma harrisonii var. tenellum Carruthers, 1864 (original description)
Dimeregramma tabellaria var. constricta Carruthers, 1864 (original description)
Donkinia didyma (Smith) Carruthers, 1864 accepted as
Amphiprora didyma W.Smith, 1853 (new combination reference)
Donkinia duplex (Donkin) Carruthers, 1864 accepted as
Amphiprora duplex var. duplex Donkin, 1858 (new combination reference)
Donkinia recta (Donkin) Grunow, 1883 accepted as
Pleurosigma rectum Donkin, 1858 (new combination reference)
Donkinia recta var. minuta (Donkin) H.Peragallo & M.Peragallo, 1898 accepted as
Pleurosigma minutum Donkin, 1858 (new combination reference)
Epithemia smithii Carruthers, 1864 (original description)
Eunotia robusta var. diadema (Ehrenberg) Carruthers, 1864 accepted as
Eunotia diadema Ehrenberg, 1837 (new combination reference)
Eunotia robusta var. tetraodon (Ehrenberg) Carruthers, 1864 accepted as
Eunotia tetraodon Ehrenberg, 1838 (new combination reference)
Eunotia robusta var. triodon (Ehrenberg) W.Carruthers, 1864 accepted as
Eunotia triodon Ehrenberg, 1837 (new combination reference)
Gomphonema acuminatum var. capitatum (Ehrenberg) W.Carruthers (original description)
Gomphonema acuminatum var. constrictum (Kützing) W.Carruthers, 1864 (new combination reference)
Gomphonema acuminatum var. cuneatum Carruthers, 1864 (original description)
Gomphonema acuminatum var. elongatum (W.Smith) G.L.Rabenhorst, 1864 accepted as
Gomphonema elongatum var. elongatum W. Smith, 1855 (new combination reference)
Gomphonema acuminatum var. fusticulus (Smith) Carruthers, 1864 accepted as
Gomphonema fusticulus W.Smith (new combination reference)
Gomphonema acuminatum var. lineare Carruthers, 1864 (original description)
Gomphonema ehrenbergii Carruthers, 1864 (original description)
Himantidium majus var. bidens Carruthers, 1864 (original description)
Homoeocladia filiformis var. minor Carruthers, 1864 (original description)
Melosira nummuloides var. pedunculata Carruthers, 1864 (original description)
Navicula amphisbaena var. obtusa Carruthers, 1864 (original description)
Navicula granulata var. humerosa (Brebisson) Carruthers, 1864 accepted as
Navicula humerosa f. humerosa Brébisson ex W. Smith, 1856 (new combination reference)
Navicula granulata var. latissima (Gregory) Carruthers, 1864 accepted as
Navicula latissima f. latissima Gregory, 1856 (new combination reference)
Navicula granulata var. punctulata (Smith) Carruthers, 1864 accepted as
Navicula punctulata Ehrenberg, 1842 (new combination reference)
Nitzschia dubia var. constricta (Kützing) Carruthers, 1864 (new combination reference)
Nitzschia sigmoidea var. reflexa Carruthers, 1864 (original description)
Pinnularia johnsoni var. linearis Carruthers, 1864 (original description)
Pleurosigma rectum var. minutum (Donkin) Carruthers, 1864 accepted as
Pleurosigma minutum Donkin, 1858 (new combination reference)
Stauroneis pulchella var. clepsydra (Donkin) Carruthers, 1864 accepted as
Navicula clepsydra var. clepsydra Donkin, 1861 (new combination reference)
Stauroneis pulchella var. intermedia Carruthers, 1864 (original description)
Surirella acuminata var. constricta Carruthers, 1864 (original description)
Surirella bellis Carruthers, 1864 (original description)
Surirella calceolus Carruthers, 1864 (original description)
Synedra dubia Carruthers, 1864 (original description)
Synedra gallionii var. minor Carruthers, 1864 (original description)
Synedra ulna var. acuminata Carruthers, 1864 (original description)