High Quality Content by WIKIPEDIA articles! Robert Boog Watson (1823–1910) was a Scottish malacologist and minister of the Free Church of Scotland best known as the author of the report on the Scaphopoda and Gastropoda collected by on the H.M.S. Challenger expedition to survey the world`s oceans during the years 1873-1876. Watson also described various Opisthobranchia from Madeira.