| 1. | The forewings are yellow with a fuscous costa with a blue metallic lustre.
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| 2. | They possess a strong metallic lustre and a green yellow color.
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| 3. | Sperrylite has a poor cleavage, and its polished surface has a metallic lustre.
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| 4. | The wings are blackish, with a strong deep blue metallic lustre.
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| 5. | The forewings have dark silvery-grey markings with a purplish-blue metallic lustre.
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| 6. | They have a metallic lustre and conduct electricity as do metals.
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| 7. | The hindwings are unicoloured brownish grey with a metallic lustre.
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| 8. | When freshly prepared, it has a silvery-white metallic lustre, but then slowly tarnishes in air.
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| 9. | They have dark plumage with a metallic lustre and bright orange facial markings and beak.
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| 10. | The forewings are dark brown with a metallic lustre.
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