Book notices

DIVERSITY OF INSECT FAUNAS. Ninth Symposium of the Royal Entomological Society. Edited by L. A. Mound and Nadia Waloff. ECOLOGICAL METHODS WITH PARTICULAR REFERENCE TO THE STUDY OF INSECT POPULATIONS, 2nd edn. By T. R. E. Southwood. PROCEEDINGS OF THE SECOND INTERNATIONAL SYMPOSIUM ON TRICHOP‐TERA, READING, ENGLAND, 25–29 JULY 1977. Edited by M. Ian Crichton. Dr W. Junk, The Hague, 1978. ADAPTATION AND SPECIATION IN THE FALL WEBWORM. Edited by T. Hidaka. INSECT AND HOST PLANT. The Proceedings of the 4th International Symposium held at Slough, England, June 1978. Edited by R. F. Chapman and E. A. Bernays.