Unpublished photographs, nerves and muscles of aquatic larva of Tipula crystallina by Richard Leach Maddox 12 pages of circular plates showing photographs taken through a microscope of the nerves, muscles and 'corpuscular bodies' of aquatic larva of Tipula crystallina. Also includes a photograph of the larva alive, 'to give the external characters'. Each verso contains a description of the figures on the recto. June 1867