Accacladocoelium alveolatum Robinson, 1934 (redescription)
Accacoeliidae Odhner, 1911 (taxonomy source)
Derogenes varicus (Müller, 1784) Looss, 1901 (redescription)
Diphterostomum brusinae (Stossich, 1888) Stossich, 1904 (redescription)
Helicometra fasciata (Rudolphi, 1819) Odhner, 1902 (redescription)
Koellikeria filicollis (Rudolphi, 1819) Cobbold, 1860 (additional source)
Opechona bacillaris (Molin, 1859) Dollfus, 1927 (redescription)
Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (redescription)
Zoogonus rubellus (Olsson, 1868) Odhner, 1902 (redescription)

Irish Sea for Koellikeria filicollis (Rudolphi, 1819) Cobbold, 1860 
United Kingdom Exclusive Economic Zone for Accacladocoelium alveolatum Robinson, 1934 
United Kingdom Exclusive Economic Zone for Derogenes varicus (Müller, 1784) Looss, 1901 
United Kingdom Exclusive Economic Zone for Helicometra fasciata (Rudolphi, 1819) Odhner, 1902 
United Kingdom Exclusive Economic Zone for Opechona bacillaris (Molin, 1859) Dollfus, 1927 
United Kingdom Exclusive Economic Zone for Otodistomum veliporum (Creplin, 1837) Stafford, 1904 
United Kingdom Exclusive Economic Zone for Zoogonus rubellus (Olsson, 1868) Odhner, 1902 

 Spelling

 for Haplosplanchnus pachysomus (Eysenhardt, 1829) Looss, 1902

Soma is a noun, so Looss (1902) made an error in making it agree in gender with the generic name. The spelling H. ... [details]