[A redescription of Capillaria carbonis (Rudolphi, 1819), (Capillariidae), based on material collected from the black cormorant (Phalacrocorax carbo)].

A redescription of a nematodes Capillaria carbonis was made on the basis of specimens found for the first time in Phalacrocorax carbo in Poland in Milicz district. It has been found that: the body of male terminates with two processes with a single large papilla, in its distal part surrounded by cuticular pseudobursa formed from four cuticular lobes; spicular sheath non spiny has a transversely-oblique striation; two lateral bacillary bands extend along whole body; number of stichocytes equals 38-42 and 42-45 in males and females respectively; vulva of gravid females appears sometimes with vulvar appendage.