Evolution of sensory pathways in vertebrates, A.B. Butler and W. Hodos; the evolution of tetrapod ears and the fossil record, J.A. Clack; evolution of the ear and hearing - issues and questions, R.R. Fay and A.N. Popper; evolution of vertebrate olfactory systems, H.L. Eisthen; evolution of taste and solitary chemoreceptor cell systems, T.E. Finger; the evolution of vertebrate electrosensory systems, J.G. New; the evolution of eyes, R.D. Fernald.