One species of pentastomid (Reighardia sternae) was found from a kittiwake (Rissa tridactyla) in Hokkaido I., Japan. This parasite species and one species of hypoderatid (Hypodectes sp.) were obtained from a crested auklet (Aethia cristatella) in this island. A case of Hypodectes sp. was the first record of the order Charadriformes.
