Figure 5 in Notes on the hypselostomatid snails (Gastropoda: Heterobranchia) from limestone hills in Western Cambodia with a new record and a new species

Figure 5. Comparative shell (tuba) and apertural dentition among the three genera based on the respective type species. (a) Anauchen Pilsbry, 1917 (syntype MNHN-IM-2000-35,161 of Boysidia gereti; Bavay and Dautzenberg, 1904). (b) Gyliotrachela Tomlin, 1930 (lectotype SMF 4587/1 of Hypselostoma hungerfordianum Möllendorff, 1891). (c) Hypselostoma Benson, 1856 (syntype NHMUK 1954.6.2.568 of Tanystoma tubiferum Benson, 1856; after Preece et al. 2022: fig. 70d). Abbreviations: a = angular lamella, p = parietal lamella.