| 1. | The oral tentacles and rhinophores are white, smooth and short.
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| 2. | The rhinophores and the oral tentacles are orange with white tips.
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| 3. | The oral tentacles have a broad white stripe on the upper surfaces.
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| 4. | The rhinophores are simple and resemble the oral tentacles.
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| 5. | There are four short, unbranched oral tentacles which are usually turned up.
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| 6. | There are bands of dark green on the rhinophores and the oral tentacles.
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| 7. | The tips of the rhinophores, oral tentacles and tail are tipped with white.
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| 8. | The tips of the rhinophores, oral tentacles and tail are dusted with white.
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| 9. | The most common way to separate the subclasses is by looking at their oral tentacles.
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| 10. | Its rhinophores are annulate, and there is a pair of elongated oral tentacles with white blotches.
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