| 21. | The protoconch contains two varix is large and stout.
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| 22. | It is white, with a large white, smooth, inflated protoconch.
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| 23. | It has a smooth protoconch of about two columella is short and thick.
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| 24. | The colour of adult whorls is straw yellow, the protoconch cinnamon brown.
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| 25. | The protoconch is smooth regularly increasing containing 2?columella show a smooth callus.
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| 26. | The colour of the protoconch is dark brown, of the teleoconch pure white.
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| 27. | The shell has seven whorls beside the protoconch.
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| 28. | The protoconch consists of two smooth rounded whorls.
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| 29. | Bucquoy, Dautzenberg & Dollfus, 1883 which was defined by a paucispiral protoconch.
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| 30. | It has a smooth protoconch containing 1?columella is short and attenuated in front.
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