SOMATOCHLORA ARCTICA (ZETTERSTEDT) IN NORTHWESTERN POLAND (ANISOPTERA: CORDULI1DAE) — A 9, taken at Trzciagowo, Wolin Island, is brought on record. The sp. was known so far from southern Poland only. A detailed description of the biotope is provided and a list is given of the odon, fauna of this locality. In addition, the literature on the occurrence of this sp. in Poland is critically reviewed.