Neuronal Integrative Mechanisms＆THEODORE HOLMES BULLOCK,Ph．D．,Professor of Zoology,University of California,Los Angeles,California． 1
Diurnal Migration of Plankton Crustaceans＆EDWARD R．BAYLOR,Ph．D．,Assistant Professor of Zoology,and FREDERICK E．SMITH,Ph．D．,Assistant Professor of Zoology,University of Michigan,Ann Arbor,Michigan． 21
Prey-Predator Recognition in the Lower Invertebrates＆L．M．PASSANO,Ph．D．,Instructor in Zoology,Yale University,New Haven,Connecticut． 37
Prey Capture in Mantids＆HORST MITTELSTAEDT,Dr．Phil．Nat．,Max-Planck-Institut für Verhal-tensphysiologie,Wilhelmshaven,Deutschland． 51
Nervous Control of Insect Muscles＆GRAHAM HOYLE,D．Sc．,Lecturer in Comparative Physiology,Depart-meat of Zoology,University of Glasgow,Scotland． 73
Myogenic Rhythms＆J．W．S．PRINGLE,Sc．D．,M．B．E．,F．R．S．,Lecturet in Zoology,Cam-bridge University,England 99
The Machinery of Insect Flight＆EDWARD G．BOETTIGER,Ph．D．,Associate Professor of Zoology,University of Connecticut,Storrs,Connecticut． 117
Neuromuscular Mechanisms＆C．A．G．WIERSMA,Ph．D．,Professor of Biology,California Institute of Technology,Pasadena,California． 143
Neurohormones or Transmitter Agents＆JOHN H．WELSH,Ph．D．,Professor of Zoology,Harvard University,Cambridge,Massachusetts． 161
Endocrinology of Invertebrates,Particularly Crustaceans＆L．H．KLEINHOLZ,Ph．D．,Professor of Biology,Reed College,Portland,Oregon 173
Humoral Dependence of Growth and Differentiation in Insects＆DIETRICH BODENSTEIN,Ph．D．,Insect Physiologist,Medical Laboratories,Army Chemical Center,Maryland． 197
The Hormonal Control of Metabolism in Decapod Crustaceans＆BRADLEY T．SCHEER,Ph．D．,Professor of Biology,University of Oregon,Eugene,Oregon． 213