In 2 vols.
'This volume is complementary to the pioneering monographs on the British nudibranchs published by the Ray Society in 1845-55 (by Joshua Alder and Albany Hancock) and in 1910 (by Sir Charles Eliot)' - cover.
Bibliography: p.188-197. _ Includes index.
Biology of opisthobranch molluscs by Thomas Everett Thompson. ISBN 0903874040. Published by Ray Society in 1976. Publication and catalogue information, links to buy online and reader comments.