Each volume in the very well known series contains special introductory chapters on important aspects of the study of British Lepidoptera; keys to families and species; a systematic section consisting of a full description, details of the life history, and a distribution map for each species, as well as structural drawings where nessesary. In addition, all species and significant variants are illustrated in colour. Also available in paperback (ISBN 978-09-46-58972-2).