Species (22.489)
- Histiobalantium agile Stokes 1886
- Histobalantium marinum Kahl 1933
- Histobalantium majus Kahl 1931
- Histiobalantium bodamicum Krainer & Müller 1995
- Histobalantium natans Claparède & Lachmann 1859
- Histriculus erethisticus Stokes 1887
- Holosticha hymenophora Stokes 1886
- Holosticha grisea Kahl 1932
- Holosticha interrupta Dragesco 1966
- Holosticha intermedia Bergh 1889
- Holosticha islandica Berger & Foissner 1989
- Holosticha kessleri Wrzesniowski 1877
- Holosticha lacazei Maupas 1888
- Holosticha manca Kahl 1932 ssp. mononucleata
- Holosticha macrostoma Dragesco 1970
- Holosticha maritimum Wang & Nie 1932
- Holosticha martimum Wang & Nie 1932
- Holosticha mancoidea Hemberger 1985
- Holosticha monilata Kahl 1928
- Holosticha milnei Kahl 1932
- Holosticha mononucleata Gelei 1954
- Holosticha multistilata Kahl 1928
- Holosticha muscicola Gellert 1956
- Holosticha muscorum Kahl 1932
- Holosticha mystacea Stein 1859
- Holosticha rhomboedrica Vuxanovici 1963
- Holosticha setifera Kahl 1932
- Holosticha sigmoidea Foissner 1982
- Holosticha similis Stokes 1886
- Holosticha simplicis Wang & Nie 1932
- Holosticha spindleri Petz, Song & Wilbert 1995
- Holosticha sylvatica Foissner 1982
- Holosticha tetracirrata Buitkamp & Wilbert 1974
- Hoplitophrya lumbriculi Katashima 1952
- Hoplitophrya secans Stein 1859
- Hoplitophrya securiformis Stein 1861
- Hoplitophrya variabilis Katashima 1952
- Hoplitophrya werestschagini Cheissin 1930
- Hovasseiella polydorae Puytorac 1955
- Hsiungia triciliata Imai 1988
- Huxleya crassa Claparède & Lachmann 1859
- Huxleya sulcata Claparède & Lachmann 1859
- Hellela intermedia
- Hellella rhizodrili Kaczanowski 1961
- Hemiamphisiella granulifera Foissner 1987
- Hemiamphisiella terricola Foissner 1988
- Hemicycliostyla marina Kahl 1932
- Hemicyclium lucidum Eberhard 1862
- Hemiophrys baltica Fenchel 1965
- Hemiophrys bivauolata Kahl 1931
- Histrio steinii Sterki 1878
- Histrio histrio Müller 1786
- Histrio sphagni Stokes 1891
- Histrio vorax Stokes 1891
- Holocoma primigenius Chatton & Lwoff 1950
- Holophrya africana Dragesco 1965
- Holophrya alba Fromentel 1876
- Holophrya alveolata Kahl 1927
- Holophrya amphora Kahl 1926
- Holophrya annandalei Ghosh 1919
- Holophrya atra Svec 1897
- Holophrya barbatula Penard 1922
- Holophrya becciformis Dumas 1930
- Holophrya bengalensis Ghosh 1919
- Holophrya biconica Sauerbrey 1928
- Holophrya bimacronucleata Grandori & Grandori 1934
- Holophrya binucleata Lepsi 1926
- Holophrya caspica Agamaliev 1966
- Holophrya bütschlii Bürger 1906
- Holophrya coleps Ehrenberg 1831
- Holophrya caudata Dumas 1929
- Holophrya collaris Kahl 1926
- Holophrya cucurbita Dumas 1937
- Holophrya coronata Morgan 1925
- Holophrya curvilata Smith 1897
- Holophrya discolor Ehrenberg 1833
- Holophrya gargamella Faure-Fremiet 1924
- Holophrya gracilis Penard 1922
- Holophrya haplostoma André 1916
- Holophrya hexatricha Savi 1913
- Holophrya heterostoma Beardsley 1901
- Holophrya indica Bathia 1916
- Holophrya labiata Dumas 1937
- Holophrya lateralis Kent 1881
- Holophrya lagena Fromentel 1876
- Holophrya lieberkühni Bütschli 1889
- Holophrya latericollaris Wang 1930
- Holophrya limbata Dumas 1929
- Holophrya mamillata Kahl 1927
- Holophrya nigricans Lauterborn 1894
- Holophrya pelagica Lohmann 1920
- Holophrya pogonias Smith 1897
- Holophrya pharyngeata Kahl 1935
- Holophrya setigera Dumas 1930
- Holophrya saginata Penard 1922
- Holophrya sulcata Penard 1922
- Holophrya simplex Schewiakoff 1893
- Holophrya tarda Quennerstedt 1869
- Holophrya torquabilis Lepsi 1962
- Holophrya teres Ehrenberg 1833