EN
The paper presents new data on the occurrence of 9 species of Dytiscidae family, rare in Poland. Hygrotus (Coelambus) polonicus (AUBÉ) is reported for the first time from Roztocze. Deronectes latus (STEPH.) is reported for the first time from Wielkopolska-Kujawy Lowland. Nebrioporus (Zimmermannius) canaliculatus (LACORD.) is new for the Western Sudetes. Ilybius crassus THOMS. is new for the Bieszczady Mts.