| 11. | Collectively, these three structures are known as the apical apparatus.
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| 12. | A dark apical spot or ocellus is present on the forewing.
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| 13. | The apical actine of the tetractines is projected inside the tubes.
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| 14. | The cells covering the apical cap are large and cleavage arrested.
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| 15. | The operculum is yellowish, ovate and has an apical nucleus.
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| 16. | The interior of the operculum is ovate, withan apical nucleus.
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| 17. | The apical half shades through light pinkish cinnamon to wood brown.
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| 18. | Each side has a row of pale, golden apical dots.
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| 19. | The females are darker brown with yellow sub-apical marks.
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| 20. | Interior . Secondary thickenings in apical cavities of both valves.
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