Figure 4 in Notes on the hypselostomatid snails (Gastropoda: Heterobranchia) from limestone hills in Western Cambodia with a new record and a new species

Figure 4. Gyliotrachela khmeriana sp. nov. (a, b) Holotype CUMZ 14206/1 from Phnom Sampov, Battambang, (a) shell with apertural dentition arrangement, and (b) protoconch sculpture. (c) Paratype CUMZ 14206/2 from the type locality with apertural dentition (very reduced basal lamella). Abbreviations: a = angular lamella, b = basal lamella, c = columellar lamella, lpl = lower palatal lamella, p = parietal lamella, upl = upper palatal lamella.