title: [New species of parasitic infusoria of the family Urceolariidae].
abstract: Three new species of Ciliata of the family Urceolariidae were found as follows: Paratrichodina voikarensis sp. n. on the gills of Coregonus nasus and C. peled; P. uralensis sp. n. on the gills of the sterlet and Trichodina percae sp. n. in the nasal cavities of the perch. Figures and descriptions of the new species are given.
mesh_terms: D000818:Animals; D016798:Ciliophora / Q000145:classification* / Q000469:parasitology; D005399:Fishes / Q000469:parasitology; D012800:Siberia
vernacular_title: Novye vidy paraziticheskikh infuzoriĭ semeĭstva Urceolariidae.