The Probert Encyclopaedia of Nature

FLUKE

Flukes, or fluke-worms is a name given to certain parasitic Scolecida (tape-worms, etc), belonging to the division of Platyelmia or Flat-worms, and included in the order Trematoda. They inhabit various situations in different animals - mostly in birds and fishes. The Distoma hepaticum exists in large numbers in the livers of sheep, and causes the disease known as 'rot' . Like the tape-worms the flukes pass through an elaborate development.
Research Fluke