[The taxonomic status of cestodes with an unusual localization from Antarctic seals].

The great structural diversity in the cestodes Glandicephalus antarticus (Baird, 1853) from the stomach and intestine of the Ross Seal and G. perfoliatus (Railliet et Henry, 1912) from the bile-pancreatic duct of the Weddel Seal was recovered. These two cestodes are moved out of the family Diphyllobothriidae Luhe, 1910 and considered as the new family Glandocephalidae fam. n. within the superfamily Diphyllobothrioidea. Redescriptions of both species, and some indices of invasion rate are provided.