Metacercaria of Transversotrema patialense in the Fresh-Water Fish Macropodus cupanus

Abstract
The discovery by the senior author of the progenetic trematode Cercaria patialensis in the snail Melanoidestuberculata at Godapola (4% infection), Colombo (20%) and Batalagoda (40%) in Ceylon, led to the discovery of 2 metacercariae of this sp. in the visceral contents of a specimen of palmyrah-fibr''e fish, Macropodus cupanus, from an irrigation channel of the rice-fields at Batalagoda. The metacercariae had abundant spermatozoa, but no eggs in the uterus. One had follicular vitellaria. They undoubtedly belonged to the sp. Transversotrema patialense.

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