Haplorchoides Chen, 1949 (Haplorchinae: Heterophyidae) in freshwater fishes.

Two metacercariae of Haplorchoides, recorded in the fingerlings of over a dozen species of freshwater fishes, are described and illustrated. Ovigerous flukes were recovered from older specimens of two species of fishes procured from the same locality. Comparison of taxonomic characters of the juveniles and adults suggests that they are conspecific. The metacercariae and adults are assigned to two new species, Haplorchoides pearsoni and H. Mehrai. The observations, presented herein, necessitated a review of the species named under this genus and a revision of the generic diagnosis. The reports on fish intermediaries of H. attenatus have been enlarged.