Echinostomum secundum Nicoll, 1906 accepted as Himasthla secunda (Nicoll, 1906) Dietz, 1909 (original description)
Levinsenia similis (Jaegerskiold, 1900) Nicoll, 1906 accepted as Spelotrema simile (Jagerskiold, 1900) Looss, 1902 accepted as Microphallus similis (Jägerskiöld, 1900) Baer, 1944 (redescription)
Levinsenia similis (Jaegerskiold, 1900) Nicoll, 1906 accepted as Spelotrema simile (Jagerskiold, 1900) Looss, 1902 accepted as Microphallus similis (Jägerskiöld, 1900) Baer, 1944 (new combination reference)
Psilostomum redactum Nicoll, 1906 accepted as Podocotyle atomon (Rudolphi, 1802) Odhner, 1905 (original description)
Zeugorchis Nicoll, 1906 nec Stafford, 1905 accepted as Parorchis Nicoll, 1907 (original description)
Zeugorchis acanthus Nicoll, 1906 accepted as Parorchis acanthus (Nicoll, 1906) Nicoll, 1907 (original description)

United Kingdom part of the North Sea for Echinostomum secundum Nicoll, 1906 
United Kingdom part of the North Sea for Levinsenia similis (Jaegerskiold, 1900) Nicoll, 1906 
United Kingdom part of the North Sea for Psilostomum redactum Nicoll, 1906 
United Kingdom part of the North Sea for Zeugorchis acanthus Nicoll, 1906