Azygiidae Lühe, 1909 (taxonomy source)
Brachyphallus crenatus (Rudolphi, 1802) Odhner, 1905 (redescription)
Derogenes varicus (Müller, 1784) Looss, 1901 (redescription)
Deropristis inflata (Molin, 1859) Odhner, 1902 (redescription)
Genolinea laticauda Manter, 1925 (redescription)
Gonocerca phycidis Manter, 1925 (redescription)
Hemiurus levinseni Odhner, 1905 (redescription)
Homalometron pallidum Stafford, 1904 (redescription)
Lecithaster gibbosus (Rudolphi, 1802) Lühe, 1901 (redescription)
Lepidapedon elongatum (Lebour, 1908) Nicoll, 1910 (redescription)
Lepidapedon rachion (Cobbold, 1858) Stafford, 1904 (redescription)
Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 (redescription)
Podocotyle atomon (Rudolphi, 1802) Odhner, 1905 (redescription)
Steganoderma formosum Stafford, 1904 (redescription)

Alaskan Exclusive Economic Zone for Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 
Gulf of Maine for Brachyphallus crenatus (Rudolphi, 1802) Odhner, 1905 
Gulf of Maine for Derogenes varicus (Müller, 1784) Looss, 1901 
Gulf of Maine for Genolinea laticauda Manter, 1925 
Gulf of Maine for Gonocerca phycidis Manter, 1925 
Gulf of Maine for Hemiurus levinseni Odhner, 1905 
Gulf of Maine for Homalometron pallidum Stafford, 1904 
Gulf of Maine for Lecithaster gibbosus (Rudolphi, 1802) Lühe, 1901 
Gulf of Maine for Lepidapedon elongatum (Lebour, 1908) Nicoll, 1910 
Gulf of Maine for Lepidapedon rachion (Cobbold, 1858) Stafford, 1904 
Gulf of Maine for Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 
Gulf of Maine for Podocotyle atomon (Rudolphi, 1802) Odhner, 1905 
Gulf of Maine for Steganoderma formosum Stafford, 1904 
Massachusetts Continental Shelf for Deropristis inflata (Molin, 1859) Odhner, 1902 
Oregon, Washington, Vancouver Coast and Shelf for Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911