[Chaetotaxy of cercariae of two Microphallid Trematodes, Microphallus gracilis Baer, 1943 and Maritrema pyrenaica Deblock and Combes, 1965 parasiting Neomys fodiens (author's transl)].

The distribution of papillae on the cercariae of Microphallus gracilis and Maritrema pyrenaica parasites of Neomys fodiens is studied. The comparison between several cercariae of Microphallidae parasites of Birds had allowed to separate the ciliary characters of the two genera Microphallus and Maritrema. The ciliary characters of the two cercariae parasites of Mammals described in this paper, and those previously pointed out in Microphallidae of Birds are identical.