[The life cycle of Maritrema misenensis (A. Palombi, 1940), n. comb. (Trematoda: Microphallidae, Travassos, 1920) from French Mediterranean coast (author's transl)].

The life cycle of Maritrema misenensis (A. Palombi, 1940) n. comb. is described with illustrations. The sporocysts parasite the digestive gland of the Prosobranch snail Cerithium mediterraneum. The cercariae are the same as Cercaria misenensis, A. Palombi, 1940 described from Italian coast. The adults have been obtained by artificial infestations of Larus argentatus michaellis. Their morphological features are same as those of the caribbean species Maritrema patulus W.H. Coil, 1955. When the life cycle of the American species is pointed out, it will be possible to know whether there are two or only one species.