Part I. Moulting, Metamorphosis and Reproduction: 1. Structures, functions and occurence of insect allatostatic peptides R. J. Weaver, J. P. Edwards, W. G. Bendena, and S. S. Tobe; 2. Neuropeptides inhibiting growth and reproduction of crustaceans S. G. Webster; 3. Molecular, cytological and physiological aspects of the crustacean hyperglycemic hormone family F. Van Herp; 4. Endocrine effectors in insect vitellogenesis X. Belles; 5. Endocrine regulation of development and reproduction in Acarines L. O. Lomas, and H. H. Rees; 6. Ecdysteroid synthesis in the crustacean Y-organ: role of cyclic nucleotides and Ca 2+ D. Sedlmeier, and A. Seinsche; 7. Regulation of steroidogenesis: role of transaldolase in crab moulting glands F. Lachaise, and G. Somme; Part II. Control of Intermediary Metabolism, Ion and Water Balance: 8. New perspectives on the structures, assays and actions of locust adipokinetic hormones M. J. Lee, and G. J. Goldsworthy; 9. Signal transduction of adipokinetic hormone W. J. A. Van Marrewijk, and D. J. Van der Horst; 10. The regulation of primary urine production in insects G. M. Coast; 11. Locust ion transport peptide (ITP): function, structure, DNA and expression J. E. Phillips, J. Meredith, N. Audsley, M. Ring, A. Macins, H. Brock, D. Theilmann, and D. Littleford; Part III. Myotropic and Myoininhibitory Arthropod Neuropeptides: Structures and Functions?: 12. The dipteran Leu-callatostatins: structural and functional diversity in an insect neuroendocrine peptide family H. Duve, A. Thorpe, A. H. Johnsen, J-L. Maestro, A. G. Scott, and P. D. East; 13. An insect peptide family in search of functions; the tachykinin-related peptides D. R. Nassel, C. T. Lundquist, J. E. Muren, and A. S. A. Winther; 14. The distribution, biological activity, and pharmacology of SchistoFLRFamide and related peptides in insects I. Orchard, and A. B. Lange; 15. Ontogenetic, phylogenetic and physiological aspects of the conserved crustacean cardioactive peptide (CCAP) neural networks in arthropods H. Dirksen; 16. Control of the insect oviduct: the role of the neuropeptide CCAP in the tobacco hornworm, Manduca sexta A. K. Marshall, and S. E. Reynolds; Part IV. Peptidases, Peptide and Pseudopeptide Mimetics: Toward New Strategies of Insect Pest Control?: 17. Insect angiotensim-converting enzyme: comparative biochemistry and evolution R. E. Isaaac, D. Coates, T. A. Williams, and L. Schoofs; 18. Mimetic analogues of the myotropic diuretic insect kinin neuropeptide family R. J. Nachman, G. M. Holman, and G. M. Coast.