Henry Walter Bates (1825–92)

Entomologist. Undertook a joint expedition to the Amazon with Alfred Russel Wallace, 1848–9; continued to explore the area, after Wallace returned to England, until 1859. Provided the first comprehensive scientific explanation of the phenomenon subsequently known as Batesian mimicry. Published an account of his travels, The naturalist on the River Amazons, in 1863. Assistant secretary, Royal Geographical Society of London, 1864–92. President, Entomological Society of London, 1868, 1869, and 1878. FRS 1881.