Checklist of the micromolluscs in the intertidal zone of the Yellow Sea and Bohai Sea, China Author Qi, Lu https://orcid.org/0000-0002-8939-9390 Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China Author Xu, Biyang Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China Author Kong, Lingfeng https://orcid.org/0000-0001-5263-1697 Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China & Sanya Oceanographic Institution, Ocean University of China, Sanya, China & Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, China klfaly@ouc.edu.cn Author Li, Qi Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, China & Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China & Sanya Oceanographic Institution, Ocean University of China, Sanya, China text Biodiversity Data Journal 2023 2023-07-07 11 105444 105444 http://dx.doi.org/10.3897/BDJ.11.e105444 journal article http://dx.doi.org/10.3897/BDJ.11.e105444 1314-2828-11-e105444 B501C317FB6355009DE70D45CB0F336C Lirularia iridescens Schrenck, 1863 Native status Found on seagrass between tidal and shallow waters. Distribution Yellow Sea of China; Japan Sea, South Kurile Islands. Notes L. iridescens was recorded by Kantor and Sysoev (2006) . Okutani (2017) described and illustrated in detail L. iridescens . In this study, the species was re-described, based on the SEM. Crater-like pitted microsculptures on the protoconch were first discovered here. At present, there are very few morphological studies on this genus Lirularia . Many studies have shown that L. iridescens are phytal gastropods inhabiting seaweeds ( Toyohara et al. 1999 , Agatsuma et al. 2005 ). Diagnosis Shell minute (2.5 +/- 0.26 mm in width, 2.2 +/- 0.15 mm in length), ovato-conica. Whorls 4-5, spire low, body whorl rather ventricose (Fig. 2 ). Suture distinct. Every whorl is striated by about 9-10 distinct spiral ribs and the distance between the spiral ribs is not uniform. Reddish-brown spiral ribs contrasting with iridescent interspaces; lines on ribs occasionally broken by white spots, with crater-like pitted microsculpture on protoconch. Aperture ovate, outer lip thin, with small notches, inner lip simple and slightly convex. Umbilicus circular deep. Basal surface flat, with 9-10 circular spiral ribs.