Abstract
Diplocotyle olrikii, Clestobothrium crassiceps, Bothriocephalus scorpii, and B. claviceps; Scolex pleuronectis, Phyllobothrium sp. (larva), and a tetraphillidean plerocercoid (Cestoda) were identified in a study of 560 specimens of Heterosomata (Hippoglossoides platessoides, Hippoglossus hippoglossus, Limanda ferruginea, Liopsetta putnami, Pseudopleuronectes americanus, and Scophthalmus aquosus) from the Gulf of St. Lawrence area. The distribution of the hosts is indicated.