An annotated type catalogue of seven genera of operculate land snails (Caenogastropoda, Cyclophoridae) in the Natural History Museum, London
The collection of the seven cyclophorid snail genera housed in the Natural History Museum, London (NHM), includes 95 available species-level names belonging to the generaPterocyclosBenson, 1832,CyclotusSwainson, 1840,MyxostomaTroschel, 1847,RhiostomaBenson, 1860,ScabrinaBlanford, 1863,CrossopomaMartens, 1891, andPearsoniaKobelt, 1902. Lectotypes are here designated for twelve available species-level names to stabilise existing the nomenclature. A complete catalogue of these types, including colour photographs, is provided for the first time. After examining these type specimens, an unpublished manuscript name was found and is described herein asPterocyclosanamullayensisSutcharit & Panha,sp. n.