Accacladocoelium macrocotyle (Diesing, 1858) Robinson, 1934 (redescription)
Accacladocoelium nigroflavum (Rudolphi, 1819) Robinson, 1934 (additional source)
Aphanhystera Guiart, 1938 accepted as Otodistomum Stafford, 1904 (original description)
Aphanhystera monacensis Guiart, 1938 accepted as Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 (original description)
Aphanhysteridae Guiart, 1938 accepted as Azygiidae Lühe, 1909 (original description)
Aphanhysterinae Guiart, 1938 accepted as Azygiinae Lühe, 1909 (original description)
Botulidae Guiart, 1938 accepted as Hirudinellidae Dollfus, 1932 (original description)
Botulus Guiart, 1938 (original description)
Botulus alepidosauri Guiart, 1938 accepted as Botulus microporus (Monticelli, 1889) Gibson & Bray, 1977 (original description)
Didymocystis lanceolata Guiart, 1938 accepted as Didymosulcus lanceolatus (Guiart, 1938) Pozdnyakov, 1990 (original description)
Didymocystis macrorchis Guiart, 1938 accepted as Didymosulcus macrorchis (Guiart, 1938) Pozdnyakov, 1990 (original description)
Hirudinella bonnacouri Guiart, 1938 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (original description)
Hirudinella fusca (Bosc, 1802) Manter, 1926 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (redescription)
Hirudinella oxysoma Guiart, 1938 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (original description)
Hirudinella pallasii (Poirier, 1885) Guiart, 1938 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (new combination reference)
Hirudinella phalloidea Guiart, 1938 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (original description)
Hirudinella poirieri (Moniez, 1891) Dollfus, 1935 accepted as Hirudinella ventricosa (Pallas, 1774) Baird, 1853 (redescription)
Nematobothrium latum Guiart, 1938 (original description)
Otodistomum scymni (Risso, 1826) Guiart, 1938 accepted as Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (new combination reference)
Sterrhurus magnacetabulum Guiart, 1938 accepted as Lecithochirium magnacetabulum (Guiart, 1938) (original description)

Azores part of the North Atlantic Ocean for Accacladocoelium nigroflavum (Rudolphi, 1819) Robinson, 1934 
Azores part of the North Atlantic Ocean for Hirudinella oxysoma Guiart, 1938 
Azores part of the North Atlantic Ocean for Hirudinella phalloidea Guiart, 1938 
Azores part of the North Atlantic Ocean for Nematobothrium latum Guiart, 1938 
Azores part of the North Atlantic Ocean for Sterrhurus magnacetabulum Guiart, 1938 
Bay of Biscay for Hirudinella fusca (Bosc, 1802) Manter, 1926 
Celtic Sea for Hirudinella poirieri (Moniez, 1891) Dollfus, 1935 
French part of the Celtic Sea for Accacladocoelium macrocotyle (Diesing, 1858) Robinson, 1934 
Madeiran part of the North Atlantic Ocean for Botulus alepidosauri Guiart, 1938 
Portuguese Atlantic Coast for Didymocystis lanceolata Guiart, 1938 
Portuguese part of the North Atlantic Ocean for Didymocystis macrorchis Guiart, 1938 
South European Atlantic Shelf for Otodistomum veliporum (Creplin, 1837) Stafford, 1904 
Western Mediterranean for Aphanhystera monacensis Guiart, 1938