The paper deals with a cryptogonimid trematode, Paracryptoganimus sootai n. sp, and a brief review of the genus Paracryptogonimus Yamaguti, 1934. ; Discussion has been presented to show that it is a heterogenous genus of species so far ai the distribution and extent of vitellaria are concerned. As a result, it has been proposed f o split the genus into Paracryptogonimus Yamaguti, 1934 sensu stricto and Neoparacryptogpnimus n. gen. Consequent upon the discovery of the presence of perioral spines in two bf three specimens by Velasquez (1961) which fully agree with Metadena apharei (Yamagutijl942) Yamaguti,1953 she transferred this species under the genus Paracryptogonimus. Concurring with Velasquez, the present author considers Pseudosiphoderoides apharei (Yamaguti, 1942) Yamaguti, 1971 as a synonym of Paracryptogonimus apharei (Yamaguti, 1^2) Velasquez, 1961. Thus, a case of homonymy arose, there being apparently two distinct species of the same name, Paracryptogonimus apharei. The name of the senior homonym, P. apharei (Yamaguti, 1942) Velasquez, 1961 has been retained whereas the junior t|omonym, P. apharei Yamaguti, 1970 has been renamed as P. satyui nom. nov. after Dr. Satyu Yamaguti