| Size (SH × SW) (in mm) | 1.22–1.37 × 1.03–1.09 | 2.14–2.38 × 1.45–1.66 | 1.75 ×1.25 | 2 × 1.33 | 1.5 × 1 | 1 × 0.7 |
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| Shell shape | conical-oval, turbinate, shiny and somewhat transparent, and depressed | typical assimineid (conical to ovoid), somewhat semi-transparent | ovately turreted, somewhat semi-transparent | conical-turreted, hyaline/ glossy, transparent, polished, and shining | conico-turrited, shining, translucent, silky | ovately conical, hyaline |
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| Color | white | brownish corneous | pale umber | white | – | dirty whitish |
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| Umbilicus | open and wide | narrow, nearly closed | widely open | widely open | open | moderately perforated |
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| Whorls | 4.25–4.5, convex | 4.5–5, convex | 5–5.5, sides flat | 5, highly convex, last whorl globular, convex below | 5, slightly convex whorls, gradate, last whorl subcylindrical, slightly compressed at periphery, convex beneath | 4.5, somewhat convex |
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| Liration | indistinct, fine and densely spaced spiral and radial ribs or growth lines across shell surface, fine radial ribs clearly visible on neck of aperture | protoconch finely granulose, teleoconch with irregular, rather strong, somewhat wavy ribs, some of which may converge | sculpture oblique, fine, close costulation, radially ribbed across shell, very densed and overlapped at aperture neck | sculptured round umbilicus in very characteristic manner, with regular distinct plications, beneath suture, faint striation is discernible, with lens | entirely distinct, somewhat strongly, closely, evenly or regularly striated; striae thread-like, oblique, more prominent toward base, especially around umbilical region | smooth |
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| Spire | acuminate | acuminate | depressedly conic | depressedly conical | acuminate | blunt |
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| Apex | conical | conical | very blunt | blunt | blunt and conical | conical |
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| Suture | moderate to well-impressed with slightly extended shoulder | well-impressed | impressed | well-impressed | well-impressed | simple and deep suture |
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| Aperture | ovate-lunate, oblique or sub-vertical | prosocline, only slightly oblique to shell axis from lateral view, elongate ovoid with pointed parieto-palatal angle | oval, suboblique | perfectly rounded, margins closely approximated but not continuous | very small, subcircular, with margins almost but not continuous, columellar one being abruptly bent back over umbilicus and then beautifully and boldy rounded | regularly ovate, above (or posteriorly) somewhat angled, not oblique |
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| Peristome | simple, somewhat thick and continuous, parietal lip straight, sometimes indistinct, merged with body-whorl, parieto-palatal juncture distinct and sharply angulated, palatal, basal and columellar lips or edges roundish | sharp, not expanded | double, with strong callus on body whorl | slightly thickened, columellar margin gradually rounded, not covering the umbilicus. | thickened, not continuous, externally slightly expanded; columellar margin strongly arched, more or less covering the umbilicus | thin, almost continuous |
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| Operculum | unknown | horny, extremely thin, paucispiral | unknown | unknown | unknown | absent? |
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| Habitat | both dry and wet walls of cave, approximately 4–12 m from cave entrance | moss in forest | tropical rainforest | tropical rainforest | midddy coastal area | on limestone hills |
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| Distribution | Krem Puri, Meghalaya, India; Arwah Cave, Meghalaya, India | Mawsmai Cave, Musmai (= Mawsmai) near Cherrapunji (= Cherrapunjee), Meghalaya, India | South Andaman, India | Batti Malve, Nicobar Islands, India | Katchall, Nicobar Islands, India | South of Moulmein, Myanmar |
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