Abstract
Echinorhynchus gadi (Zoega) Müller has been found parasitic in various species of Pacific salmon. The amphipod Cyphocaris challengeri Stebbing serves as an intermediary host for this parasite in the region in which the investigations were carried out.Echinorhynchus lageniformis sp.nov. and Corynosoma strumosum (Rudolphi) both parasitic in the Starry flounder (Platichthys stellatus (Pallas)) and the Two-lined flounder (Lepidopsetta bilineata (Ayres)) are recorded with data on their occurrence.

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