Annotated type catalogue of land snails collected from Taiwan (Formosa) in the Natural History Museum, London Author Hwang, Chung-Chi text ZooKeys 2014 428 1 28 http://dx.doi.org/10.3897/zookeys.428.8061 journal article http://dx.doi.org/10.3897/zookeys.428.8061 1313-2970-428-1 F2C3B34BF0FB4B5988081F250FD3034B Taxon classification Animalia Mesogastropoda Cyclophoridae Ptychopoma wilsoni (Pfeiffer, 1866) Figure 1D Pterocyclos wilsoni Pfeiffer, 1866: 831, pl. 46 fig. 12. [1865] (Apr. 1866). Ptychopoma wilsoni , Kobelt and Moellendorff 1897 : 88. Type locality. Formosa [Taiwan] (Swinhoe). Material examined. Lectotype. Formosa, coll. Swinhoe, from collection of H. Cuming (NHMUK 20040584/1). new designation, 9.4 x 22.5 mm, whorls 5. Paralectotypes. Formosa, coll. Swinhoe, from collection of H. Cuming (NHMUK 20040584/2-3, 2 shells). Remarks. No specimen corresponds in size with the measurements of Pfeiffer (1866) . The largest specimen mostly similar to the illustration in Pfeiffer (1866) is designated as the lectotype.