Dental surgeon and zoologist. Dental surgeon at Guy’s Hospital, London, 1817–61. Professor of zoology, King’s College, London, 1836. President of the Ray Society, 1843–59. One of the secretaries of the Royal Society, 1848–53. President of the Linnean Society, 1853–61. Described the reptiles from the Beagle voyage. FRS 1828.