| 1. | The operculum serves some of the same functions as an epiphragm.
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| 2. | This kind of epiphragm is very strong and may be difficult to break.
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| 3. | A mucus epiphragm is usually transparent or translucent, and is fairly elastic.
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| 4. | A white convex epiphragm is created for aestivation.
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| 5. | Young specimens have a coarsely tomentose epiphragm ( membranous cover ) that soon disappears.
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| 6. | The main function of the epiphragm is to reduce water loss through the aperture during inactivity.
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| 7. | The epiphragm helps the snail retain moisture and protects it from small predators such as some ants.
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| 8. | The epiphragm may be distinguished from the true operculum by its homogeneity and want of growth marks.
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| 9. | In a few species the epiphragm is thick and quite rigid, being reinforced with calcium carbonate.
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| 10. | As the fruiting body matures and the fruiting body expands, the epiphragm ruptures, exposing the internal contents.
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