TURTON, WILLIAM. Conchylia Insularum Britannicarum. The Shells of the British Islands, Systematically arranged. Exeter, 1822. 20 engraved colored plates. 4to, contemporary boards, spine worn (original printed spine label chipped), uncut; a very few pages marginal soiled. Nissen 4189 -- TURTON. A Manual of the Land and Fresh-Water Shells of the British Islands... London, 1831. 10 engraved colored plates. 8vo, contemporary cloth, rubbed -- An other Edition with additions by John Edward Gray. London, 1857. 12 engraved colored plates. 8vo, contemporary blindstamped cloth, upper spine end torn, spine slightly faded; cancelled library stamps on endpapers. (3)