Clarification on the name-bearing type designation of several cyclophorid species (Mollusca, Gastropoda) by H. H. Godwin-Austen (1915) Author Jirapatrasilp, Parin https://orcid.org/0000-0002-5591-6724 Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand Author Ablett, Jonathan D. https://orcid.org/0000-0002-7277-1934 Department of Life Sciences, Natural History Museum, London, SW 7 5 BD, UK Author Panha, Somsak Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand & Academy of Science, The Royal Society of Thailand, Bangkok 10300, Thailand Author Sutcharit, Chirasak Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand jirasak4@yahoo.com text ZooKeys 2021 2021-07-16 1049 43 66 http://dx.doi.org/10.3897/zookeys.1049.66842 journal article http://dx.doi.org/10.3897/zookeys.1049.66842 1313-2970-1049-43 0D51E7043CC143BA9617E41FA5D71AF1 2B6B3A3B91A1537E9D9F9AD06B6A9502 6. Spiraculum kempi Godwin-Austen, 1915 Spiraculum kempi Godwin-Austen, 1915: 496, 497, pl. 39, figs 4, 4a, 5, 5a. Pearsonia kempi - Sutcharit et al. 2019 : 31, fig. 7d, e. Type material. Lectotype (design. nov.) NHMUK 1903.7.1.3105/1 ( Sutcharit et al. 2019 : fig. 7d). Paralectotypes NHMUK 1903.7.1.3105/2 (1 shell) from Abor Hills; NHMUK 1903.7.1.3047 (2 shells; Sutcharit et al. 2019 : fig. 7e) from Ponging; NZSI (2 shells). The type series of this species comprises two specimen lots, "No. 3105 Brit. Mus." and "No. 3047 B.M.", and two uncatalogued specimens in the Indian Museum. Without any explicit holotype designation or equivalent expression, and given that the Register of Godwin-Austen Collection explicitly states that each lot contains two specimens (Fig. 7E, F ), all specimens in these lots are syntypes. However, only the figured specimen from lot "No. 3105 Brit. Mus." from Abor Hills was marked as "Type" in the plate caption (Fig. 1B ) and this lot is labelled as "Type" in Godwin-Austen's handwriting (Fig. 4A ). In contrast, the figured specimen from lot "No. 3047 B.M." from Ponging was not marked as "Type" in the plate caption and this lot is labelled as "Typic" in Godwin-Austen's handwriting (Fig. 4B ). Although, according to Art. 73.2., all the specimens of the type series are automatically syntypes and have equal status in being name-bearing types, we hereby designate the specimen from lot NHMUK 1903.7.1.3105 that is figured in Godwin-Austen (1915 : pl. 39, fig. 4, 4a) and Sutcharit et al. (2019 : fig. 7d) as the lectotype (NHMUK 1903.7.1.3105/1) to stabilize the name. This lectotype designation is based on the idea that Godwin-Austen (1915) selected this specimen lot as onomatophores and thus prevents any future attempt to designate a specimen from the other lots as the lectotype. The type locality of this taxon is restricted to "Abor Hills".