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(F.) Douve, D. du Foie. An obovate, flat worm, an inch in length, and nearly an inch broad; sometimes found in the gall-bladder of man, whence it occasionally passes into the intestinal canal. It is one of the most common varieties of worms, infesting the livers of the sheep, goat, ox, stag, fallow-deer, horse, ass, hog, hare, &c. The treatment is like that required for other worms. Distoma seu Distomum lanceolatum, a different species, has been found in the biliary ducts of man, -and of different phytivorous mammalia. -Mehliss.

Syn.: Paragonimus Westermanni. The liver fluke; a species about 3 mm. long with a conical anterior extremity and a broad body, with a number of spinelike processes on its surface. Its normal habitat is the liver and bile ducts of sheep, causing the disease known as the "liver rot." It has been found in a number of cases in the liver of man.