<i>Manual of conchology, structural and systematic, with illustrations of the species</i>. Ser. 2, Pulmonata. Vol. 1: Testacellidae, Oleacinidae, Streptaxidae, Helicoidea, Vitrinidae, Limacidae, Arionidae. pp 1-364, pls 1-60. Philadelphia, published by the author. [pp. 1-64, pls 1-12, Jan. 12, 1885; pp. 65-128, pls 13-25, Apr. 20, 1885; pp. 129-192, pls 26-46, Jul. 3, 1885; pp. 193-364, pls 47-60, Oct. 12, 1885]