New Edition 2015:

J. M. Elliott & M. Dobson: Freshwater Leeches of Britain and Ireland.

Leeches are segmented invertebrates (Annelida) related to earthworms. They have been found worldwide in freshwater, marine and terrestrial habitats.

On this website you find information about this fascinating group of ecto-parasites (or predators), with special reference to medicinal leeches of the genus Hirudo.

Jean Lamarck (1744 - 1829)