Contributions on a small collection of the former Subulinidae Fischer & Crosse, 1877 (Eupulmonata, Achatinoidea) with catalogue of the Glessula and Rishetia species recorded from Myanmar Author Man, Nem Sian 0000-0002-4453-734X Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand & Department of Zoology, University of Yangon, University Avenue Road, Kamayut Township 11041, Yangon, Myanmar Author Ablett, Jonathan D. 0000-0002-7277-1934 Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW 7 5 BD, UK Author Lwin, Ngwe 0000-0002-4394-3741 Fauna and Flora International, No. 35, 3 rd Floor, Shan Gone Condo, Myay Ni Gone Market Street, Sanchaung Township, Yangon, Myanmar Author Sutcharit, Chirasak 0000-0001-7670-9540 Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand Author Panha, Somsak 0000-0002-4431-2458 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 text ZooKeys 2024 2024-07-30 1208 173 239 journal article 10.3897/zookeys.1208.116083 0215503D-E8B4-4179-89F6-FB2CCC59F37E 23 Paropeas swettenhami ( de Morgan, 1885 ) Fig. 12 D Stenogyra swettenhami de Morgan, 1885: 389 , pl. 6, fig. 6. Type locality: G. Tchöra, près ďIpoh (Kinta) [Gunung Cheroh, Ipoh, Perak State , Malaysia ]. Prosopeas swettenhami — Pilsbry 1906: 32 , pl. 4, figs 11, 12. Laidlaw 1933: 216 . Paropeas swettenhami — Naggs 1994: 188 . Type specimen. Syntype MNHN - IM- 2000-38930 (1 shell; Fig. 12 D ) from Malacca , G. Tchéhèl. Diagnosis. Shell slender, elongate turreted and rapidly attenuated; apex pointed; subsequent whorls coarse with dense and fine radial striae. Suture wide and shallow, and whorls flattened. Aperture elongate ovate; columella concave. Distribution. This species has been reported from Malaysia and Shan State , Myanmar ( Naggs 1994 ). Remarks. de Morgan (1885) describes P. swettenhami and P. tchehelense consecutively in the same publication and from a very close geographical area within Perak State , Peninsular Malaysia . Then von Möllendorff (1891: 337) suggests ‘ Stenogyra swettenhami de Morgan, 1885 ’ as a slight variation of P. tchehelense ; therefore, some subsequent authors recognise the former as a synonym of the latter (i. e., Maassen 2001 ; MolluscaBase 2023 ). In contrast, Pilsbry (1906: 32) argues that they differ in shell shape and structure. We have examined the syntypes of both species and agree with Pilsbry (1906) that P. swettenhami (Fig. 12 D ) differs from P. tchehelense by having a slimmer shell, narrower aperture, cylindrical and rounded embryonic whorls. Prosopeas tchehelense (Fig. 12 E ) possesses a large, broad shell, wide aperture, convex, and rounded embryonic whorls. No new materials of this species were found in this survey, and the type specimen is illustrated herein. Naggs (1994) provisionally reported the occurrence of P. swettenhami from Shan State , Myanmar . Considering the vast geographical distance between Perak and Shan State , it may be that the specimens Naggs (1994) regarded as P. swettenhami are, in fact, P. terebralis or another species. However, collecting topotypical material from Shan State , Myanmar , is necessary to confirm the existence of this species in Myanmar and the systematic relationship with P. tchehelense .