The volume of studies on prosimian primates has, until recently, tended to lag well behind that of studies on the higher primates. This is so despite the fact that the considerable intrinsic interest of the living prosimians and the signifi- cance of their stuQ, y for our understanding of the earlier stages of primate evolution have long been acknowledged by zoologists, paleontologists, and anthropologists alike. Among the prosimians, the Malagasy...