Molluscs: Benthic Opisthobranchs is the revised and up-dated Second Edition of British Opisthobranch Molluscs and is the first second edition in the New Series to be produced.
In this new edition there is an appendix of 32 colour photographs taken by the author on his many SCUBA diving excursions around the British Isles. Benthic Opisthobranchs complements those two Ray Society volumes and is designed to be a field and laboratory guide to the British species described in them. Having identified an opisthobranch from this Synopsis readers are advised to turn to Dr Thompson's monographs Biology of Opisthobranch Molluscs Volume 1 and Volume 2 for further information, which may be supported by further black and white and colour illustrations.