Some Digenetic Trematodes of Fishes of Friday Harbor, Washington

Abstract

Since the publications of Guberlet and his students, there have been few investigations on the trematodes of marine fishes of the Puget Sound region. Lloyd and Guberlet (1932, 1936) named a new genus and species of Monorchiidae and described Syncoelium filiferum (Sars) from the Pacific salmon. McFarlane (1936) studied 15 species of trematodes, 7 of them new, from the more common shallowwater fishes in Departure Bay, B. C.; the hosts and parasites also occur in Puget Sound. Lloyd (1938) investigated trematodes from Seattle and Friday Harbor and reported 13 digeneans, including 3 new species. Acena (1947) described one new genus of hemiuroids and two new species of lepocreadiids; validity of the last two was questioned by Hanson (1950). Margolis and Adams (1956) and Margolis (1958) have recently reported two new hemiuroids from British Columbia waters. Trematodes of fishes from the California coast are frequently found further north. Among them are 8 species of the genus Podocotyle described by Park (1937) from Dillon Beach. Annereaux (1943, 1947) collected 4 new species from fishes of southern California. Manter and Van Cleave (1951) reported 17 species from La Jolla and Montgomery (1957) recorded 22 additional species from the same area. The following report includes 24 species of trematodes from 21 species of fishes of Friday Harbor.