Bates, H(enry) W(alter) 1825-1892. English
naturalist and explorer, who spent 11 years
collecting animals and plants in South
America and identified 8,000 new species of
insects. He made a special study of
camouflage in animals, and his observation of
insect imitation of species unpleasant to
predators is known as `Batesian mimicry'.