Apoblema microporum (Monticelli, 1889) Monticelli, 1891 accepted as Hemiurus microporum (Monticelli, 1889) Looss, 1899 accepted as Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (basis of record)
Azygiidae Lühe, 1909 (additional source)
Botulus Guiart, 1938 (additional source)
Botulus alepisauri (Parukhin & Nikolaeva, 1967) Parukhin & Nikolaeva, 1974 accepted as Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (source of synonymy)
Botulus cablei Stunkard, 1965 accepted as Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (source of synonymy)
Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (redescription)
Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (new combination reference)
Botulus skrjabini (Skrjabin, 1958) Parukhin & Nikolaeva, 1974 accepted as Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (source of synonymy)
Copiatestes Crowcroft, 1948 (additional source)
Copiatestes filiferus (Leuckart in Sars, 1885) Gibson & Bray, 1977 (new combination reference)
Copiatestes filiferus (Leuckart in Sars, 1885) Gibson & Bray, 1977 (redescription)
Distoma gigas Nardo, 1827 accepted as Kenmackenzia gigas (Nardo, 1827) Gibson, 1983 (redescription)
Distoma microcephalum Baird, 1853 accepted as Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (basis of record)
Distoma nigrescens Olsson, 1876 accepted as Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (status source)
Distoma scimna Risso, 1826 (basis of record)
Distoma scymni Risso, 1826 of authors accepted as Otodistomum scymni (Risso, 1826) Guiart, 1938 accepted as Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (basis of record)
Distomum insigne Diesing, 1850 accepted as Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (basis of record)
Distomum microporum Monticelli, 1899 accepted as Apoblema microporum (Monticelli, 1889) Monticelli, 1891 accepted as Hemiurus microporum (Monticelli, 1889) Looss, 1899 accepted as Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (basis of record)
Fasciola squaligrisei Diesing, 1850 (attributed to, but not used by, Risso, 1810) accepted as Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (basis of record)
Hemiurus microporum (Monticelli, 1889) Looss, 1899 accepted as Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (basis of record)
Hirudinella de Blainville, 1828 (additional source)
Hirudinella ampullacea (Buttel-Reepen, 1900) Skrjabin & Guschanskaja, 1957 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella beebei Chandler, 1937 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella bonnacouri Guiart, 1938 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella clavata (Menzies, 1791) de Blainville, 1828 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella fusca (Bosc, 1802) Manter, 1926 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella ingens (Moniez, 1886) Darr, 1902 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella marina Garcin, 1730 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella oxysoma Guiart, 1938 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella pallasii (Poirier, 1885) Guiart, 1938 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella phalloidea Guiart, 1938 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella poirieri (Moniez, 1891) Dollfus, 1935 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella siemersi (Buttel-Reepen, 1900) Skrjabin & Guschanskaja, 1959 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella spinulosa Yamaguti, 1938 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (redescription)
Hirudinellidae Dollfus, 1932 (additional source)
Lampritrema Yamaguti, 1940 (additional source)
Lampritrema atlanticum Delyamure & Serdyukov, 1970 accepted as Lampritrema miescheri (Zschokke, 1890) Margolis, 1962 (source of synonymy)
Lampritrema hawaiiense Yamaguti, 1970 accepted as Lampritrema miescheri (Zschokke, 1890) Margolis, 1962 (source of synonymy)
Lampritrema miescheri (Zschokke, 1890) Margolis, 1962 (redescription)
Lampritrema nipponicum Yamaguti, 1940 accepted as Lampritrema miescheri (Zschokke, 1890) Margolis, 1962 (source of synonymy)
Mediolecithus pacificus Oshmarin, 1968 accepted as Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (source of synonymy)
Otodistomum Stafford, 1904 (additional source)
Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 (redescription)
Otodistomum monacensis (Guiart, 1938) accepted as Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 (basis of record)
Otodistomum plicatum Kay, 1947 accepted as Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (basis of record)
Otodistomum plunketi Fyfe, 1953 (redescription)
Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (redescription)
Profundiella alepisauri Parukhin & Nikolaeva, 1967 accepted as Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (source of synonymy)
Profundiella skrjabini Skrjabin, 1958 accepted as Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (source of synonymy)
Prosorchiopsis Dollfus, 1947 (redescription)
Prosorchiopsis legendrei Dollfus, 1947 (redescription)
Ptychogonimidae Dollfus, 1937 (taxonomy source)
Ptychogonimus Lühe, 1900 (additional source)
Ptychogonimus megastomum (Rudolphi, 1819) Lühe, 1900 (redescription)
Sclerodistomidae Odhner, 1927 (additional source)
Syncoeliidae Looss, 1899 (additional source)
Uroproctinella attenuata Hafeezullah, 1971 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)
Uroproctinella spinulosa (Yamaguti, 1938) Skrjabin & Guschanskaja, 1957 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (source of synonymy)

Adriatic Sea for Ptychogonimus megastomum (Rudolphi, 1819) Lühe, 1900 
Aldabra Atoll for Hirudinella ventricosa (Pallas, 1774) Baird, 1853 
Bay of Biscay for Otodistomum veliporum (Creplin, 1837) Stafford, 1904 
Canary Islands part of the North Atlantic Ocean for Hirudinella ventricosa (Pallas, 1774) Baird, 1853 
Celtic Seas for Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 
Celtic Seas for Copiatestes filiferus (Leuckart in Sars, 1885) Gibson & Bray, 1977 
Celtic Seas for Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 
Celtic Seas for Otodistomum plunketi Fyfe, 1953 
Celtic Seas for Otodistomum veliporum (Creplin, 1837) Stafford, 1904 
English Channel for Ptychogonimus megastomum (Rudolphi, 1819) Lühe, 1900 
Floridian for Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 
Kenyan part of the Indian Ocean for Hirudinella ventricosa (Pallas, 1774) Baird, 1853 
Madeiran part of the North Atlantic Ocean for Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 
Malvinas/Falklands for Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 
Natal for Hirudinella ventricosa (Pallas, 1774) Baird, 1853 
Natal for Prosorchiopsis Dollfus, 1947 
Natal for Prosorchiopsis legendrei Dollfus, 1947 
North Sea for Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 
Northern European Seas for Distoma gigas Nardo, 1827 
Pacific Ocean for Copiatestes filiferus (Leuckart in Sars, 1885) Gibson & Bray, 1977 
Papua New Guinean Exclusive Economic Zone for Hirudinella ventricosa (Pallas, 1774) Baird, 1853 
Scotland for Lampritrema miescheri (Zschokke, 1890) Margolis, 1962 
Senegalese part of the North Atlantic Ocean for Copiatestes filiferus (Leuckart in Sars, 1885) Gibson & Bray, 1977 
Senegalese part of the North Atlantic Ocean for Hirudinella ventricosa (Pallas, 1774) Baird, 1853 
Seychelles for Hirudinella ventricosa (Pallas, 1774) Baird, 1853 
South and West Iceland for Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 
Southern Norway for Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 
St. Helena and Ascension Islands for Hirudinella ventricosa (Pallas, 1774) Baird, 1853 
Tristan Da Cunha part of the South Atlantic Ocean for Copiatestes filiferus (Leuckart in Sars, 1885) Gibson & Bray, 1977 
Virginian for Copiatestes filiferus (Leuckart in Sars, 1885) Gibson & Bray, 1977 
Zanzibar Channel for Hirudinella ventricosa (Pallas, 1774) Baird, 1853 

 Spelling

 for Distoma scymni Risso, 1826 of authors

Sometimes spelled scymni [details]

 Spelling

 for Fasciola squaligrisei Diesing, 1850 (attributed to, but not used by, Risso, 1810)

Originally spelled squali grisei [details]