| 1. | The shell is nacreous, with delicate suffused splashes of brown.
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| 2. | The hindwings are bright nacreous ( resembling mother of pearl ).
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| 3. | Scalation may either be metallic, nacreous ( calico ) or matte.
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| 4. | The nacreous layer of monoplacophoran shells appears to have undergone some modification.
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| 5. | The nacreous layer is excessively thin, especially in the typical form.
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| 6. | The luster ranges from vitreous to nacreous and silky ( if fibrous ).
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| 7. | Its nacreous ceramic exterior is said to change color at different viewing angles.
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| 8. | The interior is nacreous, with blue-green and fiery-red reflections
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| 9. | The umbilicus and its margin are pure white, the aperture nacreous green.
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| 10. | The aperture is more produced and the golden-nacreous appearance is wanting.
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