| 11. | The inner lip is overlaid with a thick polished callus.
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| 12. | The aperture is very transverse, and the inner lip is reflexed on the columella.
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| 13. | The interior of the aperture and inner lip is white.
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| 14. | On the inner lip is a callus sheet, thickening at the posterior angle to a tubercle.
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| 15. | The inner lip has a small expansion beyond the columella, but perfectly filling up the perforation.
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| 16. | The inner lip is raised anteriorly with a slight umbilical chink between it and the body-whorl.
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| 17. | The inner lip shows a raised margin.
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| 18. | Its nucleus is near the inner lip.
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| 19. | :: If it's one with a screw top then the inner lip will help seal the lid.
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| 20. | The inner lip is thin and narrow.
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