Muscle architecture and control demands, C. Gans and A.S. Gaunt; the spinal motor system in early vertebrates and some of its evolutionary changes, J.R. Fetcho; brainstem control of orienting movements - intrinsic co-ordinate systems and underlying circuitry, T. Masino; the role of heterarchical control in the evolution of central pattern generators, A.H. Cohen; the evolution of neural circuits controlling feeding behaviour in frogs, K.C. Nishikawa, et al; chromatophore systems in teleosts and cephalopods - a levels-oriented analysis of convergent systems, L.S. Demski.