An annotated type catalogue of seven genera of operculate land snails (Caenogastropoda, Cyclophoridae) in the Natural History Museum, London Author Sutcharit, Chirasak Author Ablett, Jonathan D. Author Panha, Somsak text ZooKeys 2019 842 1 65 http://dx.doi.org/10.3897/zookeys.842.29243 journal article http://dx.doi.org/10.3897/zookeys.842.29243 1313-2970-842-1 3A4BB2800F484831AF4BC84D6FE5CDAE 38. euryomphalus (Pfeiffer, 1857) Fig. 5H, I Cyclostoma (Opisthophorus) euryomphalum Pfeiffer, 1857a [1856]: 337. Pterocyclos euryomphalus - Reeve 1863 : volume 14, Pterocyclos , pl. 5, species 29. Cyclotus euryomphalus - Kobelt 1902 : 215. Current generic position. Cyclotus Swainson, 1840 Type locality. Borneo. Type material. Syntype NHMUK 20170351 (3 shells; Fig. 5H, I). Remarks. This species was described based on specimens from the Cuming collection, and was not illustrated in the original description. Reeve (1863) re-published the description and figured a specimen from the Cuming collection. The NHM collections contain a lot of three shells from the Cuming collection with a label in Pfeiffer's hand written label stating the taxon name and collection locality. The specimen which closely matches the illustration in Reeve (1863) and the shell measurements given in the original description is figured herein (Fig. 5H).