Talitrus littoralis Leach, 1814 – synonym of Talitrus saltator
Talitrus locusta Bate and Westwood, 1861 – synonym of Talitrus saltator
Talorchestia brito Stebbing, 1891 – synonym of Pseudorchestoidea brito
Tanais aequiremis Lilljeborg, 1864 – synonym of Typhlotanais aequiremis
Tanais brevimanus Lilljeborg, 1864 – synonym of Leptognathia brevimana
Tanais cavolinii Lauterbach, 1970 – synonym of Tanais dulongii
Tanais cavolinii Milne Edwards, 1840 – synonym of Tanais dulongii
Tanais depressus Sars, 1872 – synonym of Typhlotanais aequiremis
Tanais dubius Krøyer, 1842 – synonym of Leptochelia savignyi
Tanais dulongii Milne Edwards, 1838 – synonym of Tanais dulongii
Tanais Edwardsii Krøyer, 1842 – synonym of Leptochelia savignyi
Tanais filiformis Lilljeborg, 1864 – synonym of Leptognathia filiformis
Tanais forcipatus Lilljeborg, 1864 – synonym of Pseudotanais forcipatus
Tanais graciloides Lilljeborg, 1864 – synonym of Tanaopsis graciloides
Tanais hirticaudatus Norman, 1899 – synonym of Tanais dulongii
Tanais savignyi Krøyer, 1842 – synonym of Leptochelia savignyi
Tanais tomentosus Krøyer, 1842 – synonym of Tanais dulongii
Tanais vittatus Lilljeborg, 1864 – synonym of Tanais dulongii
Tanais ¸rstedi Krøyer, 1842 – synonym of Heterotanais oerstedi
Tanaopsis laticaudata Sars, 1896 – synonym of Tanaopsis graciloides
Tessarops hastatus Norman, 1868 – synonym of Tiron spiniferus
Tetromatus bellianus Bate, 1856 – synonym of Ampelisca brevicornis
Tetromatus typicus Bate, 1856 – synonym of Ampelisca typica
Thersites guilliamsoniana Bate, 1856 – synonym of Bathyporeia guilliamsoniana
Thia polita Leach, 1875 – synonym of Thia scutellata
Thia residua Nevinson, 1913 – synonym of Thia scutellata
Thysanoessa aberdonensis Sim, 1872 – synonym of Thysanoessa inermis
Thysanoessa borealis G.O. Sars, 1886 – synonym of Thysanoessa inermis
Thysanoessa inermis Hansen, 1911 – synonym of Thysanoessa inermis
Thysanoessa raschii (M. Sars, 1864) – synonym of Thysanoessa raschii
Thysanoessa raschii Hansen, 1911 – synonym of Thysanoessa raschii
Thysanoessa tenera G.O. Sars, 1883 – synonym of Thysanoessa longicaudata
Thysanopoda (?) raschii Vanhoffen, 1897 – synonym of Thysanoessa longicaudata
Thysanopoda couchii Bell, 1853 – synonym of Nyctiphanes couchi
Thysanopoda longicaudata Krøyer, 1846 – synonym of Thysanoessa longicaudata
Thysanopoda nana M. Sars, 1864 – synonym of Meganyctiphanes norvegica
Thysanopoda neglecta Krøyer, 1846 – synonym of Thysanoessa inermis
Thysanopoda norvegica M. Sars 1857 – synonym of Meganyctiphanes norvegica
Tiron acanthurus Liljeborg, 1865 – synonym of Tiron spiniferus
Tiron spiniferum Shoemaker, 1955 – synonym of Tiron spiniferus
Tryphosa ciliata Sars, 1882 – synonym of Orchomene nanus
Tryphosa horingii Boeck, 1871 – synonym of Tryphosella horingi
Tryphosa horringii Sars, 1891 – synonym of Tryphosella horingi
Tryphosa nanoides Boeck, 1871 – synonym of Tryphosella nanoides
Tryphosella horringii Bonnier, 1893 – synonym of Tryphosella horingi