| 21. | Microscopic accremental striae scratch the whole surface and have the sinuosities of the outer lip.
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| 22. | An insinuation of the outer lip, near the base, like that of " Strombus ".
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| 23. | Both inner and outer lips are cream or white.
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| 24. | The outer lip is thin and broken, not descending.
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| 25. | Just in front of the siphonal canal is a slight insinuation of the outer lip.
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| 26. | The inner edge of the outer lip is golden-brown and white, interior shining and nacreous.
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| 27. | The erect outer lip is denticulate and with a weak sculpture of 9 or 10 lirae.
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| 28. | The outer lip : from the body to the keel it is slightly concave and contracted.
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| 29. | The outer lip is dentate and ridged within.
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| 30. | The outer lip is thin and not flared.
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