| 41. | No cliques form, no racial striations.
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| 42. | It is often marked with glacial striations.
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| 43. | The striations show the direction of movement.
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| 44. | Adults are purplish red with silvery striations.
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| 45. | The forewings are greyish with darker striations.
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| 46. | This is replaced by some thin striations.
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| 47. | The forewings are dark brown with a violet lustre and with weakly visible transverse striation.
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| 48. | The ground color of forewings are silky cream-white, with grayish transverse striation.
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| 49. | Visitors can inspect glacial striations attesting to the Ice Age history of the Maine coast.
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| 50. | These in turn are covered with cm-scale striations running in the same direction.
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