The Descent of Man, and Selection in Relation to Sex, Volume 2

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