The genus Nerita (Gastropoda: Neritidae) inhabits tropical and temperate regions, which is widely distributed in intertidal areas. Recently, it was suggested that Nerita albicilla was divided into the two different species with addition of N. originalis sp. nov. In the previous study (Park et al., 2023), the morphometric data inferred from shell morphological characteristics were first employed to distinguish the two Nerita species from each other. To examine taxonomic significance of shell morphological differences, we have done the normality test of the nine ratios from shell morphology suggested by Park et al. (2023). The result revealed that only six shell morphology ratios (SW/SL, H/SL, H/SW, AL/SW, AW/SW, and AW/SL) possess appropriate normality. Through a bivariate correlation test conducted with the six ratios, we found only four ratio sets of shell morphology have little correlation- (SW/SL, AW/SL), (H/SL, AW/SL), (H/SW, AW/SL), and (AL/SW, AW/SL). With them, we performed the logistic regression and discriminant analyses. The results suggested that (H/SL, AW/SL) has the highest average percentage value (74.7%) in species identification accuracy of the two Nerita species. The present result indicates that the employment of statistical approaches could serve as a viable method in analyzing Nerita shell morphology for taxonomic use.