The Descent of Man and Selection in Relation to Sex

acquired American apes appear Argus pheasant baboon beauty become believe birds body brain breed breeding-season Brehm bright colours butterflies chimpanzee civilised common conspicuous developed differences in colour distinct species doubt early elytra extremely fact faculties feathers fighting fishes Fritz Müller genus given habits hair head Hist horns individuals inhabitants inherited insects instance kind larvæ latter Lepidoptera less likewise lower animals Lubbock Malay Archipelago mammæ mammals manner Marsupials modified monkeys moral moult muscles natural selection naturalists negro observed occur ocelli offspring organs ornaments Orthoptera pair period plumage polygamous possess present probably Proc Prof progenitors Quadrumana quadrupeds races reason remarks resemble respect rudiments savages secondary sexual characters seems seen sexes sexual selection shew shewn skull social instincts stridulating structure surface tail teeth tints tion transmitted tribe variable Variation of Animals various Vertebrates Wallace whilst the females wings young Zoolog