Species (15.149)
- Strombidium testaceum Anigstein 1914
- Strombidium turbo Claparède & Lachmann 1859
- Strombidium tintinnoides Entz 1884
- Strombidium typicum Ray-Lankester ?
- Strombidium vestitum Leegaard ?
- Strombidium urceolare Stein ?
- Strombidium viride Stein 1867
- Strombidium virgatum Wulff 1919
- Strombidium wulffi Kahl 1932
- Styloplotes norwegicus Quennerstedt 1867
- Supraspathidium gigas Cunha 1914
- Supraspathidium canaliculatum Lepsi 1959
- Supraspathidium lieberkuehni Bütschli 1889
- Supraspathidium multistriata Foissner & Didier 1981
- Supraspathidium polyvacuolatum Vuxanovici 1959
- Supraspathidium terres Stokes 1886
- Supraspathidium vermiforme Penard 1922
- Swedmarkia arenicola Dragesco 1954
- Syncyathella lusti Matthes 1955
- Syllarcon draconematis Jankowski 1981
- Synhymenia heterovesiculata Gelei 1939
- Synophrya hypotrophica Chatton & Lwoff 1926
- Syringopharynx pterotrocheae Collin 1914
- Systylis hoffi Bresslau 1919
- Tachyblaston epheltensis Martin 1909
- Tachysoma agile Stokes 1887
- Tachysoma furcatum Kahl 1932
- Tachysoma hyalina Berger, Foissner & Adam 1984
- Tachysoma micans Engelmann 1862
- Tachysoma longa Hemberger 1985
- Tachysoma mirabile Stokes 1887
- Tachysoma parvistylum Stokes 1887
- Tachysoma raptans Hemberger 1985
- Tachysoma perisincirra Hemberger 1985
- Tachysoma pellionella Müller 1773
- Tachysoma pellionellum Müller 1773
- Tachysoma rigescens Kahl 1932
- Tachysoma saltans Cohn 1866
- Tachysoma terricola Hemberger 1985
- Telotrochidium cylindricum Foissner 1978
- Telotrochidium johanninae Faure-Fremiet 1950
- Strobilidium proboscidiferum Milne 1886
- Strobilidium spiniferum Leegaard 1915
- Strobilidium tonsuratum Meunier 1910
- Strobilidium typicum Faure-Fremiet 1924
- Strobilidium velox Faure-Fremiet 1924
- Strombidinopsis acuminata Stokes 1886
- Strombidinopsis claparedei Faure-Fremiet 1924
- Strombidinopsis gyrans Kent 1881
- Strombidinopsis proboscidifera Milne 1886
- Strombidion globosum Fromentel 1876
- Strombidium antarcticum Busch 1930
- Strombidium arenicola Dragesco 1960
- Strombidium buehringae Busch 1921
- Strombidium armatum Bürger 1908
- Strombidium calkinsi Kahl 1932
- Strombidium caudatum Fromentel 1874
- Strombidium capitatum Leegaard 1915
- Strombidium cinctum Kahl 1932
- Strombidium chlorophilum Montagnes, Lynn, Stoecker & Small 1988
- Strombidium claparedei Kent 1881
- Strombidium clavellinae Buddenbrock 1922
- Strombidium constrictum Meunier 1907
- Strombidium compressum Leegaard 1915
- Strombidium nasutum
- Strombidium minimum Gruber 1884
- Strombidium mirabile Penard 1916
- Strombidium obliquum Kahl 1932
- Strombidium oblongum Entz 1884
- Strombidium prorogatum Busch 1930
- Strombidium ovale Leegaard 1915
- Strombidium purpureum Kahl 1932
- Strombidium pulchrum Leegaard 1915
- Strombidium schizostomum Kahl 1932
- Strombidium reticulatum Leegaard 1915
- Strombidium rehwaldi Petz & Foissner 1992
- Strombidium strobilum Lohmann 1908
- Strombidium spiniferum Leegaard 1915
- Strombidium sulcatum Claparède & Lachmann 1859
- Strombidium styliferum Levander 1894
- Strombidium symbioticum Jankowski 1974
- Strongylidium crepidatum Wang 1940
- Strongylidium crassum Sterki 1878
- Strongylidium contortus Gelei 1954
- Strongylidium labiatum Kahl 1932
- Strongylidium lanceolatum Kowalewski 1882
- Strongylidium marititum Wang & Nie 1932
- Strongylidium mucicola Kahl 1932
- Strongylidium muscorum Kahl 1932
- Strongylidium packi Calkins 1902
- Strongylidium wilberti Foissner 1982
- Strongylidium polystichum Kahl 1932
- Stylarcon truncatus Jankowski 1915
- Stylicauda platensis Cunha & Fonseca ()
- Stylochona coronata Kent 1881
- Stylochona glabra Jankowski 1973
- Stylochona maxillaris Jankowski 1973
- Stylochona nebalina Kent 1881
- Stylochona villosa Jankowski 1973
- Stylochona setaria Jankowski 1973