When this historically significant volume was first published in 1968, the detailed study of the Trematoda had been sadly neglected in Britain and zoologists interested in this group had been obliged to search for information in foreign periodicals, or to take what they could find in a few standard works and ordinary textbooks of zoology. Dawes' aim in this book was to make available in English, in a single volume, information that will enable students, teachers, and research workers of zoology in schools, colleges, and universities to identify the trematode parasites of representative animals from the European fauna, and also to provide a broader outline of the structure, modes of life, bionomics, and life histories of these animals that could be found in any one book published in any language.