DR. K.G. ADIYODI, formerly Professor of Physiology and Dean,Faculty of Science, Calicut University, Kerala, India andVice-Chancellor, Cochin University of Science and Technology,Kochi, is now Public Service Commissioner to Government of India,New Delhi. A distinguished invertebrate reproductive biologist, whogave the discipline of invertebrate reproductive biology a global distinctiveness and identity of its own, Dr. K.G. Adiyodi isFounder Secretary of the International Society of Inverebrate Reproduction, Founder Editor-in-Chief of the International Journalof Invertebrate Reproduction and Development, and Founder Presidentof the Indian Society of Invertebrate Reproduction.DR. RITA G. ADIYODI, formerly Rhodes Visiting Fellow, SomervilleCollege, Oxford (1976-78), is Professor of Zoology at CalicutUniversity. She served as President of the Crustacean Reprobiologyand Aquaculture Bureau of India and as Vice-President of the Indian Society of Invertebrate Reproduction. Dr. Rita Adiyodi representedIndia on the International Committee of Comparative Endocrinology.The Adiyodis have worked extensively, over the past three decades,on the endocrinology and physiology of growth and reproduction ofarthropods, chiefly crustaceans.DR. AUGUST DORN is Professor of Zoology at the Institute ofZoology, Johannes Gutenberg-University (JOGU) in Mainz, Germany.After his doctoral degree from the JOGU, he carried out a researchproject at the Albert Einstein College of Medicine in New York:Neuroendocrine Processes in Insect Embryos. Since 1972 he isprofessor at the JOGU and teaches General and AppliedEndocrinology. His chief research interests are EndocrineRegulation of Insect Reproduction, Role of Hormones in Locust PhasePolymorphism and Mode of Action of Natural Insect GrowthRegulators. In 1981/82 he was Visting Professor at the Departmentof Biology at the University of North Carolina in Chapel Hill (USA)sponsored by the VW-Stiftung. He has published numerous articles inthe above-mentioned fields.

• Preface to the Progress Series. Preface to Volume X, Part B. Contributors. Evolution of Steroid Hormones and Steriod-Hormone Receptors (G.Kauser). Evolution of Developmental Peptide Hormones and Their Receptors (J.Broeck, et al.). Arthropoda--Insecta: Embryology (A. Dorn). Arthropoda--Insecta: Larval Development andMetamorphosis--Molecular Aspects (M. Spindler-Barth & K.-D.Spindler). Arthropoda--Insecta: Diapause (D. Saunders). Arthropoda--Insecta: Caste Differentiation (K. Hartfelder). Arthropoda--Insecta: Endocrine Control of Phase Polymorphism (A.Dorn, et al.). Arthropoda--Insecta: Migration (J. Kent & M. Rankin). Non-Vertebrate Chordata (M. Pestarino). Subject Index. Species Index.

DR. K.G. ADIYODI, formerly Professor of Physiology and Dean,Faculty of Science, Calicut University, Kerala, India andVice-Chancellor, Cochin University of Science and Technology,Kochi, is now Public Service Commissioner to Government of India,New Delhi. A distinguished invertebrate reproductive biologist, whogave the discipline of invertebrate reproductive biology a global distinctiveness and identity of its own, Dr. K.G. Adiyodi isFounder Secretary of the International Society of Inverebrate Reproduction, Founder Editor-in-Chief of the International Journalof Invertebrate Reproduction and Development, and Founder Presidentof the Indian Society of Invertebrate Reproduction.DR. RITA G. ADIYODI, formerly Rhodes Visiting Fellow, SomervilleCollege, Oxford (1976-78), is Professor of Zoology at CalicutUniversity. She served as President of the Crustacean Reprobiologyand Aquaculture Bureau of India and as Vice-President of the Indian Society of Invertebrate Reproduction. Dr. Rita Adiyodi representedIndia on the International Committee of Comparative Endocrinology.The Adiyodis have worked extensively, over the past three decades,on the endocrinology and physiology of growth and reproduction ofarthropods, chiefly crustaceans.DR. AUGUST DORN is Professor of Zoology at the Institute ofZoology, Johannes Gutenberg-University (JOGU) in Mainz, Germany.After his doctoral degree from the JOGU, he carried out a researchproject at the Albert Einstein College of Medicine in New York:Neuroendocrine Processes in Insect Embryos. Since 1972 he isprofessor at the JOGU and teaches General and AppliedEndocrinology. His chief research interests are EndocrineRegulation of Insect Reproduction, Role of Hormones in Locust PhasePolymorphism and Mode of Action of Natural Insect GrowthRegulators. In 1981/82 he was Visting Professor at the Departmentof Biology at the University of North Carolina in Chapel Hill (USA)sponsored by the VW-Stiftung. He has published numerous articles inthe above-mentioned fields.

• Preface to the Progress Series. Preface to Volume X, Part B. Contributors. Evolution of Steroid Hormones and Steriod-Hormone Receptors (G.Kauser). Evolution of Developmental Peptide Hormones and Their Receptors (J.Broeck, et al.). Arthropoda--Insecta: Embryology (A. Dorn). Arthropoda--Insecta: Larval Development andMetamorphosis--Molecular Aspects (M. Spindler-Barth & K.-D.Spindler). Arthropoda--Insecta: Diapause (D. Saunders). Arthropoda--Insecta: Caste Differentiation (K. Hartfelder). Arthropoda--Insecta: Endocrine Control of Phase Polymorphism (A.Dorn, et al.). Arthropoda--Insecta: Migration (J. Kent & M. Rankin). Non-Vertebrate Chordata (M. Pestarino). Subject Index. Species Index.

DR. K.G. ADIYODI, formerly Professor of Physiology and Dean,Faculty of Science, Calicut University, Kerala, India andVice-Chancellor, Cochin University of Science and Technology,Kochi, is now Public Service Commissioner to Government of India,New Delhi. A distinguished invertebrate reproductive biologist, whogave the discipline of invertebrate reproductive biology a global distinctiveness and identity of its own, Dr. K.G. Adiyodi isFounder Secretary of the International Society of Inverebrate Reproduction, Founder Editor-in-Chief of the International Journalof Invertebrate Reproduction and Development, and Founder Presidentof the Indian Society of Invertebrate Reproduction.DR. RITA G. ADIYODI, formerly Rhodes Visiting Fellow, SomervilleCollege, Oxford (1976-78), is Professor of Zoology at CalicutUniversity. She served as President of the Crustacean Reprobiologyand Aquaculture Bureau of India and as Vice-President of the Indian Society of Invertebrate Reproduction. Dr. Rita Adiyodi representedIndia on the International Committee of Comparative Endocrinology.The Adiyodis have worked extensively, over the past three decades,on the endocrinology and physiology of growth and reproduction ofarthropods, chiefly crustaceans.DR. AUGUST DORN is Professor of Zoology at the Institute ofZoology, Johannes Gutenberg-University (JOGU) in Mainz, Germany.After his doctoral degree from the JOGU, he carried out a researchproject at the Albert Einstein College of Medicine in New York:Neuroendocrine Processes in Insect Embryos. Since 1972 he isprofessor at the JOGU and teaches General and AppliedEndocrinology. His chief research interests are EndocrineRegulation of Insect Reproduction, Role of Hormones in Locust PhasePolymorphism and Mode of Action of Natural Insect GrowthRegulators. In 1981/82 he was Visting Professor at the Departmentof Biology at the University of North Carolina in Chapel Hill (USA)sponsored by the VW-Stiftung. He has published numerous articles inthe above-mentioned fields.

• Preface to the Progress Series. Preface to Volume X, Part B. Contributors. Evolution of Steroid Hormones and Steriod-Hormone Receptors (G.Kauser). Evolution of Developmental Peptide Hormones and Their Receptors (J.Broeck, et al.). Arthropoda--Insecta: Embryology (A. Dorn). Arthropoda--Insecta: Larval Development andMetamorphosis--Molecular Aspects (M. Spindler-Barth & K.-D.Spindler). Arthropoda--Insecta: Diapause (D. Saunders). Arthropoda--Insecta: Caste Differentiation (K. Hartfelder). Arthropoda--Insecta: Endocrine Control of Phase Polymorphism (A.Dorn, et al.). Arthropoda--Insecta: Migration (J. Kent & M. Rankin). Non-Vertebrate Chordata (M. Pestarino). Subject Index. Species Index.