Actinoptychus senarius var. denarius (Ehrenberg) O'Meara, 1875 accepted as Actinoptychus denarius Ehrenberg, 1843 (new combination reference)
Actinoptychus senarius var. duodenarius (Ehrenberg) O'Meara, 1875 accepted as Actinocyclus duodenarius (Ehrenberg) W. Smith, 1856 (new combination reference)
Actinoptychus senarius var. sedenarius (Ehrenberg) O'Meara, 1875 accepted as Actinocyclus sedenarius Ehrenberg, 1839 (new combination reference)
Actinoptychus senarius var. vicenarius (Ehrenberg) O'Meara, 1875 accepted as Actinoptychus vicenarius Ehrenberg, 1843 (new combination reference)
Brebissonia boeckii (Ehrenberg) E.O'Meara, 1875 accepted as Cocconema boeckii Ehrenberg, 1838 (new combination reference)
Coscinodiscus centralis sensu O'Meara, 1876 (original description)
Coscinodiscus ehrenbergii O'Meara, 1875 (original description)
Coscinodiscus gregorii O'Meara, 1876 (original description)
Coscinodiscus smithii O'Meara, 1876 (original description)
Denticula mutabilis (W.Smith) O'Meara, 1875 accepted as Odontidium mutabile var. mutabile W. Smith, 1856 (new combination reference)
Fragilaria maxima O'Meara, 1876  (original description)
Lysigonium westii (W. Smith) O'Meara, 1876 accepted as Melosira westii f. westii W. Smith, 1856 (new combination reference)
Lysigonium wrightii (O'Meara) O'Meara, 1876 accepted as Melosira wrightii O'Meara, 1869 (new combination reference)
Mastogloia closeii O'Meara, 1876 (original description)
Mastogloia convergens O'Meara, 1876 (original description)
Mastogloia costata O'Meara, 1875 (original description)
Mastogloia smithii var. capitata O'Meara, 1875 (original description)
Mastogloia smithii var. capitata O'Meara, 1875 (original description)
Navicula acuta (W.Smith) O'Meara, 1875 accepted as Stauroneis acuta f. acuta W. Smith, 1853 (new combination reference)
Navicula arraniensis O'Meara, 1875 (original description)
Navicula barkeriana O'Meara, 1875 (original description)
Navicula bicapitata O'Meara, 1875 (original description)
Navicula caerulea O'Meara, 1875 (original description)
Navicula cleviana O'Meara, 1876 (original description)
Navicula cluthensis var. producta O'Meara, 1876 (original description)
Navicula coerulea O'Meara, 1876 (original description)
Navicula collisiana O'Meara, 1876 (original description)
Navicula crucifera O'Meara, 1876 (original description)
Navicula cuneata O'Meara, 1876 (original description)
Navicula cuspis O'Meara, 1876 (original description)
Navicula davidsoniana O'Meara, 1876 (original description)
Navicula decipiens O'Meara, 1876 (original description)
Navicula deliginensis O'Meara, 1876 (original description)
Navicula divergens var. elliptica O'Meara, 1875 (original description)
Navicula divergens var. longa O'Meara, 1875 (original description)
Navicula donkinia O'Meara, 1875 (original description)
Navicula elliptica var. costata O'Meara, 1875 (original description)
Navicula elliptica var. davidsonii O'Meara, 1875 (original description)
Navicula elliptica var. ovalis (W.Smith) O'Meara, 1875 accepted as Navicula ovalis W.Smith, 1853 (new combination reference)
Navicula elliptica var. parva O'Meara, 1875 (original description)
Navicula elongata Grunow, 1875 (original description)
Navicula expleta O'Meara, 1876 (original description)
Navicula franciscae O'Meara, 1876 (original description)
Navicula galvagensis O'Meara, 1876 (original description)
Navicula gibba var. boeckii (Rabenhorst) O'Meara, 1875 (new combination reference)
Navicula globifera O'Meara, 1876 (original description)
Navicula gregorii O'Meara, 1875 (original description)
Navicula grundleriana O'Meara, 1876 (original description)
Navicula grunowii O'Meara, 1876 (original description)
Navicula hibernica O'Meara, 1875 (original description)
Navicula incisa O'Meara, 1876 (original description)
Navicula johnsonii var. johnsonii (W. Smith) O'Meara, 1876 accepted as Pinnularia johnsonii var. johnsonii W. Smith, 1853 (new combination reference)
Navicula lagerstedtii O'Meara, 1876 (original description)
Navicula lucida O'Meara, 1876 (original description)
Navicula lyra var. constricta O'Meara, 1876 (original description)
Navicula lyra var. costata O'Meara, 1875 (original description)
Navicula lyra var. elliptica (W.Smith) O'Meara, 1875 accepted as Navicula elliptica W.Smith, 1853 (new combination reference)
Navicula lyra var. forcipata (Greville) O'Meara, 1875 accepted as Navicula forcipata f. forcipata Greville, 1859 (new combination reference)
Navicula lyra var. grunovii O'Meara, 1875 (original description)
Navicula lyra var. minor O'Meara, 1875 (original description)
Navicula lyra var. seductilis (A.Schmidt) O'Meara, 1875 accepted as Navicula seductilis A.Schmidt, 1874 (new combination reference)
Navicula marginata (O'Meara) O'Meara, 1876 accepted as Pinnularia marginata O'Meara, 1869 (new combination reference)
Navicula menapiensis O'Meara, 1876 (original description)
Navicula microstauron var. microstauron (Ehrenberg) O'Meara, 1876 accepted as Stauroptera microstauron Ehrenberg, 1843 (new combination reference)
Navicula moreii O'Meara, 1876 (original description)
Navicula nebulosa var. suborbicularis O'Meara, 1875 (original description)
Navicula papillifera O'Meara, 1876 (original description)
Navicula pfitzeriana O'Meara, 1876 (original description)
Navicula plumbicolor O'Meara, 1876 (original description)
Navicula pygmaea var. cuneata O'Meara, 1875 (original description)
Navicula richardsoniana O'Meara, 1876 (original description)
Navicula rostellifera O'Meara, 1876 (original description)
Navicula rupestris O'Meara, 1876 (original description)
Navicula scalaris (Ehrenberg) O'Meara, 1875 accepted as Stauroptera scalaris Ehrenberg, 1843 (new combination reference)
Navicula schmidtii O'Meara, 1875 (original description)
Navicula scutellum (O'Meara) O'Meara, 1876 accepted as Pinnularia scutellum O'Meara, 1869 (new combination reference)
Navicula spectabilis var. sub-orbicularis O'Meara (original description)
Navicula stokesiana O'Meara, 1876 (original description)
Navicula suborbicularis var. forficula (O'Meara) O'Meara, 1876 accepted as Pinnularia forficula O'Meara, 1867 (new combination reference)
Navicula suborbicularis var. parva O'Meara, 1875 (original description)
Navicula tabellaria var. acrosphaeria (Brébisson) O'Meara, 1875 accepted as Navicula acrosphaeria A.Schmidt, 1875 (new combination reference)
Navicula tenuirostris O'Meara, 1876 (original description)
Navicula termes var. termes (Ehrenberg) O'Meara, 1876 accepted as Pinnularia termes var. termes Ehrenberg, 1843 (new combination reference)
Navicula translucida O'Meara, 1876 (original description)
Navicula tumida var. linearis O'Meara, 1875 (original description)
Navicula undosa sensu O'Meara, 1876 (original description)
Navicula undulata O'Meara, 1875 (original description)
Navicula vickersii O'Meara, 1876 (original description)
Navicula williamsonii O'Meara, 1875 (original description)
Odontidium elegans (Kützing) O'Meara, 1875 accepted as Denticula elegans Kützing, 1844 (new combination reference)
Odontidium inflatum (W. Smith) O'Meara, 1876 accepted as Denticula inflata W.Smith, 1856 (new combination reference)
Odontidium sinuatum (Thwaites) O'Meara, 1875 accepted as Denticula sinuata Thwaites, 1856 (new combination reference)
Odontidium teune (Kützing) O'Meara, 1875 accepted as Denticula tenuis Kützing, 1844 (new combination reference)
Odontodiscus anglicus (Donkin) O'Meara, 1876 † accepted as Systephania anglica Donkin, 1861 (new combination reference)
Odontodiscus hibernicus O'Meara, 1876 † (original description)
Ralfsia E. O'Meara, 1875 (original description)
Ralfsia tabellaria O'Meara, 1875 (original description)
Rhaphoneis amphiceros var. leptoceros (Ehrenberg) O'Meara, 1875 (new combination reference)
Rhaphoneis harrisonii (W.Smith) O'Meara, 1875 accepted as Odontidium harrisonii f. harrisonii Roper, 1854 (new combination reference)
Synedra acula var. tenuissima (Kützing) O'Meara, 1875 accepted as Frustulia tenuissima Kützing, 1833 (new combination reference)