Thylogale billardierii -- red-bellied pademelon, Tasmanian Pademelon. Alternate name on piece: Halmaturus billarderii [Tasmanian wallaby] Layout drawing, main animal fairly finished; "this head a full size larger"--however it was not changed before publication, and the published text states that it is "the size of nature"; large letter "O." Artist's name(s): Gould, John; Richter, Henry Constantine.