Guangxi, southern Peoples Republic of China (Dmax 50.3 mm.) Lee Collection. This is Helix (Camaena) contractiva Var. elata Bavay & Dautzenberg, 1909: 172 <https://www.biodiversitylibrary.org/page/27393333>. The shell above is larger, proportionately taller, more globose, and has a proportionately wider aperture and smaller umbilicus than a three specimen lot also in the Lee Collection, two shells of which are treated as Aegistohadra contractiva. Further the surface has a has shagreen texture sculpture imparted by fine spirals and much reduced malleation than the parent traxon. This taxon appears sufficiently distinct from H. contractiva to warrant full species rank, but that exaltation would incur junior homonymy of at least two taxa (Pilsbry, 1931; <https://molluscabase.org/aphia.php?p=taxdetails&id=1481262>).

    A very similar, but smaller, specimen labelled Helix (Camaena) contractiva Var. elata and marked "type" was located by Yves Samyn, Conservator of the Recent Invertebrates (non insects) Collection of the Royal Belgian Institute of Natural Science (RBINS). Dr. Samyn kindly posted images at <http://virtualcollections.naturalsciences.be/virtual-collections/recent-invertebrates/mollusca/gastropoda/helicidae/helix-camaena-contractiva-var-elata-bavay-dautzenberg-1909>. Bearing catalogue no. I.G. 10591/MT.708 and reposing in RBINS Dautzenberg Collection, the shell measures in the range of 35-36 mm. Dmax based on the companion scale. This is slightly more than the 34 mm. in the original description, but it is certainly a syntype, perhaps the holotype, as the label confirms it was collected by Col. Messager (see Breure & Páll-Gergely, 2019) in Gia Phú, Tonkin, a low-lying rural commune (WGS 84: 20° 21′ 11″ N, 105° 48′ 51″ E) in Ninh Bình Province, 50 mi S of Hanoi, Vietnam and ~about 120 mi from Guangxi Province,  China) during 1908. Helix seraphinica Heude, 1890 is closely related; see discussion of Aegistohadra contractiva.

Bavay, A. and P. Dautzenberg, 1909. Description de coquilles nouvelles de l'Indo-Chine (5e suite). Journal de Conchyliologie 57: 163-206 <http://biodiversitylibrary.org/page/27393324>, plates 4-8 <http://biodiversitylibrary.org/page/27393440>.

Breure, A.S.H. & B. Páll-Gergely, 2019. More than just a name: Colonel Messager and his correspondents. Zoosystema 41(2): 7-19. Link

See also: Lee, H.G., 2022. Aenigmatic Aegistohadra Part 2 (conclusion) -or- an account of a pretty astounding clade of sinistral and enantiomorphic land snail taxa. Shell-O-Gram 63(4): 3-10. July. (Link)