M.E. Hadley 
The Melanotropic Peptides [PDF ebook] 
Volume II: Biological Roles

The three volumes on ‘The Melanotropic Peptides’ are the outcome of a conference of the same name that was held in Tucson, Arizona, from October 11-12, 1986. Volume II disdcusses the diverse putative physiologial roles of MSH and MCH. A concluding chapter of this volume provides a discussion of the possible evolutionary relationships between MSH and MCH in the control of color change.