Preface; Part I. Development and Differentiation: 1. Embryonic hemocytes: origin and development H. Mori; 2. Postembryonic development and differentiation: hemopoietic tissues and their functions in some insects J. A. Hoffman, D. Zachary, D. Hoffman, M. Brehelin and A. Porte; 3. Multiplication of hemocytes D. Feir; Part II. Forms and Structure: 4. Hemocyte types: their structures, synonymies, interrelationships and taxonomic significance A. P. Gupta; 5. Surface and internal ultrastructure of hemocytes of some insects H. Akai and S. Sato; 6. Fine structure of hemocyte membranes and intercellular junctions formed during hemocyte encapsulation R. J. Baerwald; 7. Controversies about the coagulocyte Ch. Gregoire and G. Goffinet; 8. Controversies about hemocyte types in insects J. W. Arnold; 9. Hemocyte cultures and insect hemocytology S. S. Sohi; 10. Pathways and pitfalls in the classification and study of insect hemocytes J. C. Jones; Part III. Functions: 11. Hemocytes and growth in insects V. B. Wigglesworth; 12. Hemocytes and connective tissue: a critical assessment Doreen E. Ashhurst; 13. Role of hemocytes in defense against biological agents N. A. Ratcliffe and A. F. Rowley; 14. Cellular and humoral responses to toxic substances D. Feir; 15. Biochemical and ultrastructural aspects of synthesis, storage, and secretion in hemocytes A. C. Crossley; 16. Changes in hemocytes populations M. Shapiro; Part IV. Techniques: 17. Identification key for hemocytes types in hanging-drop preparations A. P. Gupta; 18. Insect hemocytes under light microscopy: techniques J. W. Arnold and C. F. Hinks; 19. Techniques for total and differential hemocytes counts and blood volume, and mitotic index determinations M. Shapiro; 20. Hemocytes techniques: advantaged and disadvantages M. Shapiro; 21. Light transmission and scanning electron microscopic techniques for insect hemocytes R. J. Baerwald; 22. Histochemical methods for hemocytes Doreen E. Ashhurst.