Podocotyle araii sp. nov. (Digenea: Opecoelidae) from Sebastes spp. off the coast of British Columbia, with a key to the species of Podocotyle Dujardin, 1845, occurring off the Pacific coast of North America. Journal of Natural History, 20(3) 1986: 735-743. 736 [Zoological Record Volume 123]