The present studies were done to determine the prevalence of Paramphistoma in Korean cattle. Material have been collected by authors at the slaughter house of Pusan in Korea from February to July of 1966. The fixing solution used were 10 percent formaline, Carnoy-solution, Zinker and Bouin solution for total worm body preparation. The staining was done with acetocarmine and Delafild's Hematoxylin for total preparation and double Hematoxylin-Eosin staining for microscopical section slides. The following results were obtained: The authors have identified six species of Amphistoma from Korean cattle, and these are Paramphistoma orthocoelium, P. cervi, P. explanatum, P. gotoi, Gastrothylax elongatus and Gastrothylax cobblodi. The prevalence status is as follow: Paramphistoma orthoceolium and Gastrothylax elongatus are very common and Paramphistoma cervi, Paramphistoma explanatum are rather common, but Paramphistoma gotoi and Gastrothylax cobblodi are very rare in Korean cattle.
