Pilsbry, H. A. (1892-1893). Manual of conchology, structural and systematic, with illustrations of the species. Ser. 2, Pulmonata. Vol. 8: Helicidae, vol. 6. pp 1-314, pls 1-58. Philadelphia, published by the Conchological Section, Academy of Natural Sciences. [pp. 1-48, pls 1-15, 25 July 1892; pp. 49-112, pls 16-27, 16 Nov 1892; pp. 113-160, pls 28-41, 25 Feb 1893; pp. 161-314, pls 42-58, 1 July 1893].
339961
Pilsbry, H. A.
1892-1893
<i>Manual of conchology, structural and systematic, with illustrations of the species</i>. Ser. 2, Pulmonata. Vol. 8: Helicidae, vol. 6. pp 1-314, pls 1-58. Philadelphia, published by the Conchological Section, Academy of Natural Sciences. [pp. 1-48, pls 1-15, 25 July 1892; pp. 49-112, pls 16-27, 16 Nov 1892; pp. 113-160, pls 28-41, 25 Feb 1893; pp. 161-314, pls 42-58, 1 July 1893]
