Contributions to the theory of Natural Selection. A series of essays ... Second edition, with corrections and additions |
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abundant adapted affinity animals antenn¿ antitypes appear Bates beautiful become bees beetles birds Borneo brain brilliant butterflies caterpillars causes Celebes changes character closely allied species concealed curious Danaida Darwin Diphilus distinct earth eggs enemies evidence exactly example existence explained external extinct facts faculties favourable flowers genera genus geological geological periods groups habits harmony Heliconid¿ imitation India individuals inhabiting insects instinct islands Java larv¿ Lepidoptera less Longicorn Malayan male Mimeta mimic mimicry mode modifications Moluccas moths natural selection nest never number of species observations occur Origin of Species Ormenus Pammon Papilio Papilio Ulysses Papilionid¿ peculiar perfect period phenomena Polydorus possess present probably produced protection race regions remarkable render resemble result savage sexes sexual sexual selection shown similar spots structure Sumatra surface tail theory of Natural Theseus tints tion trees tropical Tropidorhynchus variation varied varieties whole wings yellow