Monodhelminthidae Dollfus, 1937 accepted as Tandanicolidae Johnston, 1927 (original description)
Monodhelminthinae Dollfus, 1937 accepted as Tandanicolidae Johnston, 1927 (original description)
Monodhelmis Dollfus, 1937 (original description)
Monodhelmis torpedinis Dollfus, 1937 (original description)
Orchidasmatinae Dollfus, 1937 (original description)
Otodistomum veliporum leptotheca Dollfus, 1937 accepted as Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (original description)
Otodistomum veliporum pachytheca Dollfus, 1937 accepted as Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (original description)
Otodistomum veliporum veliporum (Creplin, 1837) Stafford, 1904 accepted as Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (redescription)
Ptychogonimidae Dollfus, 1937 (original description)
Styphlodorinae Dollfus, 1937 accepted as Plagiorchiidae Lühe, 1901 (original description)

Bay of Biscay for Otodistomum veliporum veliporum (Creplin, 1837) Stafford, 1904 
English Channel for Otodistomum veliporum leptotheca Dollfus, 1937 
Mauritanian part of the North Atlantic Ocean for Monodhelmis torpedinis Dollfus, 1937 
Mauritanian part of the North Atlantic Ocean for Otodistomum veliporum pachytheca Dollfus, 1937 
Moroccan part of the North Atlantic Ocean for Otodistomum veliporum leptotheca Dollfus, 1937 
Moroccan part of the North Atlantic Ocean for Otodistomum veliporum pachytheca Dollfus, 1937