CONTRIBUTIONS TO CONCHOLOGY, No. 1. By James C. Cox, M.D., F.L.S. (Plates XX. and xxi). 1. Helicarion SophijE, Gaskoin. (Plate XX. Figs. 8-9). Originally described by Gaskoin in Proc. Zool. Soc, 1854, p. 152, us Helix Sophice. Figured in Reeve's Con. Icon. Vol. II. Helix, pi. 196, fig. 1377, as Helix Sojihice. Nanina (Hemiplecta) Sophice in PfeifFer's Nomenclator Heli-ceorum viventium (sub-section Ecarinatae), p. 49, 1881. Figured in Tryon's Manual Conch., Pulmonata, pi. 16, fig. 26, Yol. II. ; description at p. 83 as Nanina Sophice. The figure of it as given here is much too conical. Also figured and described in other works. This is a true Helicarion and not a Nanina ; the animal now figured is not entirely retractile within the shell, and the posterior end has a large dorsal piojection and mucous pore. 2. Paraphanta Busbyi, Gray. (Plate XX. Fig. 6). Originally described in Ann. Mag. of Nat. Hist. 1841, Vol. VI., p. 317, as Helix Busbyi. Nanina (Paraphanta), Pfeifier, Nomen. Hel., 1881, p. 34. Shell figured in Reeve, Conch. Icon. Vol. II., pi. 164, fig. 11, and in many other works. Tryon's Manual, Conch., Pulmonata, Vol. I. p. 127, pi. 26, figs. 23-24. The animal drawn from life by Mrs. E. Forde.