Species (22.489)
- Holophrya truncata Kahl 1927
- Holophrya vorax Dragesco 1960
- Holophrya vesiculosa Kahl 1926
- Holophryozoon bovi Jirovec 1933
- Holophryoides macrotricha Strelkow 1939
- Holosticha annulata Kahl 1928
- Holosticha binucleata Foissner, Peer & Adam 1985
- Holosticha camerounensis Dragesco 1970
- Holosticha caudata Stokes 1886
- Holosticha brevis Kahl 1932
- Holosticha coronata Vuxanovici 1963
- Hemiophrys fusidens Kahl 1926
- Hemiophrys gandolfi Andre 1914
- Hemiophrys inquieta Biernacka 1963
- Hemiophrys lanceolata Dragesco 1965
- Hemiophrys macrostoma Chen 1955
- Hemiophrys impatiens Penard 1922
- Hemiophrys loxophylliformis Dragesco 1960
- Hemiophrys marina Kahl 1931
- Hemiophrys muscicola Kahl 1931
- Hemiophrys meleagris Ehrenberg 1838
- Hemiophrys pectinata Kahl 1926
- Hemiophrys pleurosigma Stokes 1884
- Hemiophrys branchiarum Wenrich 1924
- Hemiophrys plurivacuolata Foissner 1978
- Hemiophrys procera Penard 1922
- Hemiophrys punctata Kahl 1926
- Hemiophrys salmica Burkovsky 1970
- Hemiophrys rotunda Kahl 1931
- Hemiophrys similis Ghosh 1921
- Hemiprorodon gymnoposthium Strelkow 1939
- Hemisincirra filiformis Foissner 1982
- Hemisincirra gracilis Foissner 1982
- Hemisincirra gellerti Foissner & Schade in Foissner 2000 ssp. verrucosa
- Hemisincirra heterocirrata Hemberger 1985
- Heterochona exilis Jankowski 1973
- Heteropolaria horizontalis Jankowski 1985
- Heterocoma hyperparasitica Chatton & Lwoff 1939
- Heteropolaria lwoffi Faure-Fremiet 1943
- Hexotricha globosa Conn & Edmondson 1918
- Histriculus complanatus Stokes 1887
- Histriculus admirabilis Foissner 1980
- Histriculus cavicola Kahl 1935
- Histriculus histrio Müller 1773
- Histriculus hyalinus Vörösvary 1950
- Histriculus muscorum Kahl 1932
- Histriculus lemani Dragesco 1966
- Histriculus steinii Corliss 1960
- Histriculus vorax Stokes 1891
- Histrio acuminatus Maskell 1886
- Histrio erethesticus Stokes 1887
- Histrio complanatus Stokes 1887
- Histrio similis Quennerstedt 1867
- Histrio inquietus Stokes 1887
- Holosticha longiseta Lepsi 1951
- Holosticha navicularia Kahl 1932
- Holosticha obliqua Kahl 1928
- Holosticha oculata Mereschkowsky 1877
- Holosticha pseudorubra Kaltenbach 1960
- Holosticha punctata Rees 1884
- Holosticha pullaster Müller 1773
- Holosticha scutellum Cohn 1866
- Holosticha retrovacuolata Tucolesco 1962
- Holosticha stueberi Foissner 1987
- Holosticha venalis Stokes 1887
- Holosticha teredorum Tucolesco 1962
- Holosticha vernalis Stokes 1887
- Holosticha violacea Kahl 1928
- Holosticha wrzesniowskii Mereschkowsky 1877
- Holosticha xanthichroma Wirnsberger & Foissner 1987
- Holosticha viridis Kahl 1932
- Holostichides terricola Foissner 1988
- Holostichides chardezi Foissner 1987
- Holostichides typicus Song & Wilbert 1988
- Holostichides wilberti Song 1990
- Homalozoon caudatum Kahl 1935
- Homalogastra setosa Kahl 1926
- Hoplitophrya acanthodes Puytorac 1969
- Homalozoon flexile Stokes 1890
- Homalozoon vermiculare Stokes 1887
- Hoplitophrya cheissini Puytorac 1969
- Hoplitophrya eminoscolecis Puytorac 1969
- Hoplitophrya criodrili Miyashita 1933
- Hoplitophrya fissispiculata Cheissin 1930
- Hoplitophrya georgevitchi Puytorac 1958
- Hoplitophrya henleae Meier 1954
- Hoplitophrya libyodrili Puytorac 1969
- Hoplitophrya lituiformis Georgevitch 1941
- Hoplitophrya minuta Miyashita 1933
- Hoplitophrya pungens Stein 1861
- Hyalophysa chattoni Bradbury 1966
- Holophrya acuta Dumas 1929
- Holophrya gibbera Fromentel 1876
- Holophrya emmae Bergh 1896
- Holophrya globosa Fromentel 1876
- Holophrya marina Mansfeld 1923
- Holophrya maxima Daday 1886
- Holophrya oblonga Maupas 1883
- Holophrya ornata Stokes 1887
- Holophrya ovata Fromentel 1876