Preface: Evo-Devo on the Brain: Striedter, G.F.; Drosophila as a Developmental Paradigm of Regressive Brain Evolution: Proof of Principle in the Visual System: Friedrich, M.; Contribution of Genoarchitecture to Understanding Forebrain Evolution and Development, with Particular Emphasis on the Amygdala: Medina, L.; Bupesh, M.; Abellan, A.; Integrated Brain Diversification along the Early Neuraxes: Sylvester, J.B.; Pottin, K.; Streelman, J.T.; Evo-Devo and Brain Scaling: Candidate Developmental Mechanisms for Variation and Constancy in Vertebrate Brain Evolution: Charvet, C.J.; Striedter, G.F.; Finlay, B.L.; Subject Index.