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46 COLEOPTERA FROM MARITIME HABITATS by Guy HAGHEBAERT n (Koninklijk Belgisch Instituut voor Natuurwetenschappen, afdeling Entomologie, Vautierstraat 29, B-1040 Brussel) *-^t t &6^ a Coleoptera occupy three rather distinct seashore habitats : the I intertidal zone, sandy beaches and salt-mudflats. In our fauna, about 75 species are coastdwellers. More than 50 7, belongs to the Carabidae and Staphylinidae of which the last is predominant. The species are . major groups typical . . after ecological factors classified * in halobiontic, halophilous and haloxene species. Most coastbeetles are found beneath wrack and algae, a small group are carnivorous and phytophagous, and only one species is known to be parasitic. Most of the species are very local or rare and only a few can be recognized as common. Notes on there biology and chorology are given in this contributton. three