| 21. | Shells may be discoidal or globular or in between.
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| 22. | The white shell has a turbiniform or discoidal shape.
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| 23. | Hindwing pale greyish brown, with obscure discoidal point.
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| 24. | There is an oblique dark brown antemedial line and a dark discoidal bar.
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| 25. | The hindwings are glossy grey-brown, with a slight discoidal spot.
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| 26. | The hindwings have a discoidal annulate spot and a curved fuscous postmedial line.
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| 27. | The discoidal spot is formed of a double line.
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| 28. | There is a slight dark discoidal bar and an indistinct dark medial line.
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| 29. | The forewings are white slightly tinged with stramineous, with black discoidal spots.
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| 30. | They are characterized by thinly discoidal to globular shells with variable umbilici and sculpture.
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