Edward Westey Janson (1822–91)

Natural history dealer. Educated for the medical profession. Assisted his father as a city merchant and later was secretary of the Dutch Rhenish railway. On the death of his father, in 1867, went into business as a bookseller and natural history dealer. Specialised in Coleoptera and Elateridae, of which he amassed a large collection. Curator of the collections of the Entomological Society of London, 1850–63; librarian until 1874; secretary, 1857–61.