Cambridge Encyclopedia » Cambridge Encyclopedia Vol. 45


A specialized ringed worm related to the earthworms; body highly contractile, usually with a sucker at each end; many are blood-feeders on vertebrate hosts, others are predators of invertebrates; found in aquatic and damp terrestrial habitats. One species was used in early medicine for ‘bleeding’ patients suffering from various illnesses. (Phylum: Annelida. Subclass: Hirudinea.)

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or