| 1. | The elevated riblets are densely crenate and the interstices canaliculate.
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| 2. | The conoid spire is canaliculated, composed of six operculum is thin.
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| 3. | Leaves are canaliculate ( grooved lengthwise ), and up to 7 cm long.
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| 4. | It is canaliculate, with a wide umbilicus.
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| 5. | Petiole is 0.5-1.0 cm long, canaliculate and glabrous.
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| 6. | The leafblades may be hairy or glabrous, canaliculate and marked with maroon spots and bars on the abaxial surface.
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| 7. | Other specimens are of a uniform color, have the whorls strongly canaliculated, and the longitudinal folds more approximate.
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| 8. | They narrow to canaliculate ( with a small channel or groove ) brownish-marked haft, or short claw.
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| 9. | Walls are of cemented agglutinated material and have cavities created by micro-tubules, i . e . are canaliculate.
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| 10. | Leaves are simple, alternate, distichous; petioles are 0.6-1.1 cm long and canaliculate.
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