Order Pseudophyllidea Carus 1863

Family Bothriocephalidae Rudolphi 1808

Genus Bothriocephalus Rudolphi 1808

• Bothriocephalus scorpii (Müller 1776) – marine, parasite. Mature adult forms in the intestines of shorthorn sculpins, fourhorn sculpins, Atlantic cods – Шульман, Шульман-Альбова, 1953; larvae in the intestines of fish fry, in planktonic copepods – own data

Family Diphyllobothriidae Lühe 1910

Genus Pyramicocephalus Monticelli 1890

• Pyramicocephalus phocarum (Fabricius 1780) – marine, parasite. Mature adult forms in the stomach and intestines of the Bearded Seal (the Square Flipper Seal) – own data; larvae in four species of fish – Шульман, Шульман-Альбова, 1953; own data

Family Cyathocephalidae Nybelin 1922

Genus Diplocotyle Krabbe 1874

• Diplocotyle olrikii Krabbe 1874 – marine, parasite. Mature adult forms and larvae in Gammarus oceanicus – Леонтович, Валовая, 1989; own data

rus:Отряд Pseudophyllidea Carus 1863