Genus-level revision of the Alycaeidae (Gastropoda, Cyclophoroidea), with an annotated species catalogue Author Pall-Gergely, Barna Plant Protection Institute, Centre for Agricultural Research, Herman Otto ut 15, Budapest, H- 1022, Hungary https://orcid.org/0000-0002-6167-7221 pallgergely2@gmail.com Author Sajan, Sheikh Zoological Survey of India, Prani Vigyan Bhawan, M Block, New Alipore, Kolkata 700053, West Bengal, India & Wildlife Institute of India, Chandrabani, Dehradun 248 002, Uttarakhand, India https://orcid.org/0000-0002-2785-6824 Author Tripathy, Basudev Zoological Survey of India, Prani Vigyan Bhawan, M Block, New Alipore, Kolkata 700053, West Bengal, India Author Meng, Kaibaryer National Zoological Museum of China, Institute of Zoology, Chinese Academy of Sciences, Beijing, China Author Asami, Takahiro Department of Biology, Shinshu University, Matsumoto 390 - 8621, Japan https://orcid.org/0000-0001-5706-0272 Author Ablett, Jonathan D. Mollusca Section, Invertebrates Division, Department of Life Sciences, The Natural History Museums, London SW 7 5 BD, United Kingdom text ZooKeys 2020 981 1 220 http://dx.doi.org/10.3897/zookeys.981.53583 journal article http://dx.doi.org/10.3897/zookeys.981.53583 1313-2970-981-1 5194AAC86B8A473F8A41470A60182A0B 7C44C797C4125A71BAE032A55E6FA5DC Metalycaeus sinensis (Heude, 1882) Alycaeus sinensis Heude, 1882: 7, pl. 12, figs 13, 13a. Alycaeus sinensis - Moellendorff 1882 : 345. Alycaeus (Chamalycaeus) sinensis - Kobelt and Moellendorff 1897 : 149; Kobelt 1902 : 363. Metalycaeus sinensis - Pall-Gergely et al. 2017 : 103-104, fig 55. Type locality. "Ad radices saxorum inter folia decidua in districtu Tong-lieou (東流), provinciae Ngan-houe" . Material examined. China, Tong-lieou, MCZ 167216 (lectotype, designated by Pall-Gergely et al. 2017 ). Remarks. Protoconch relatively low, with very fine matte surface and barely visible spiral lines; R1 with rather regular ribs and much weaker spiral lines between; ribs become more widely spaced towards the end of R1; R2 with relatively low, widely spaced ribs, however all available shells were weathered.