Hypselostoma panhai J. B. Burch & Tongkerd 2003

Hypselostoma panhai J. B. Burch & Tongkerd, 2003 Fig. 185 Hypselostoma panhai Burch & Tongkerd in Burch et al. 2003: 178–183, fig. 18. Hypselostoma panhai — Tongkerd et al. 2004: 145, fig. 4 D – H; Panha and Burch 2008: 95–97, fig. 82; Dumrongrojwattana and Wongkamhaeng 2024: 324, fig. 8. Type material examined. Thailand • holotype; CUMZ 44055. Type locality. “ Chongkhaokad, west of the World War II museum, near the famous bridge of the now abandoned railroad of World War II, Triyoke District, Kanchanaburi Province, 14°24'8"N, 98°53'23"E, 140 meters elevation, Thailand ”. Differential diagnosis. This species is similar to H. edentatum but the latter lacks apertural barriers. However, this species is most similar to H. iunior sp. nov. from which it can be separated by the less conical shell, deeper sutures, more convex whorls, clearly weaker parietal callus, slightly wider umbilicus, and much coarser spiral striation (dense in H. iunior sp. nov.). Distribution. This species is known only from the type locality.