EN
Eleven species of digenetic trematodes, including a new one, are reported from 21 species of pleuronectid flatfishes (representing 5 families) inhabiting the Arabian Sea, off the Kerala coast, India. The parasites are Prosorhynchus sp. metacercaria; Stephanostomum sp. metacercaria; Decemtestis mehrai Srivastava, 1936; Macvicaria cynoglossi (Madhavi, 1975); M. longicaudus (Hafeezullah, 1971); M. jagannathi (Gupta et Singh, 1985); Pseudopecoelus scomberi (Hafeezullah, 1971); Lepocreadioides orientalis Park, 1939; didymozoid larva (Type 1); didymozoid larva (Type 2) and Monorcheides hafeezullahi sp. n. There are 36 new host records. A list of digenetic trematodes recorded so far from the flatfishes of India is also given. The adult trematodes collected except L. orientalis showed an endemic distribution to seas around Indian peninsula. The host specificity of parasites is discussed.