| 31. | The columella is almost straight and is marked with small brown spots.
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| 32. | The 1?nuclear columella is moderately stout and well curved.
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| 33. | The columella is nearly perpendicular and incised at its base.
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| 34. | The columella is vertical, arcuate, and slightly expanded.
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| 35. | Sometimes elongated spots appear upon the columella is arched and smooth
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| 36. | The columella, which is thickened, shows two folds.
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| 37. | The columella is almost straight and has a thin callus.
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| 38. | The sutures on the convex-conical columella is callous.
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| 39. | The columella is very oblique, slightly arcuate, and shortly reflexed above.
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| 40. | columella, and a smaller one in the palate ( frequently wanting ).
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