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Butterflies may usually be distinguished by the vertical position of their wings when they are at rest, and by their having the antennae slender and club-shaped at the end.

Berenice Butterfly

Butterflies may usually be distinguished by the vertical position of their wings when they are at rest,…

"Coin of Ptolemy." — Smith, 1882

Coin of Ptolemy

"Coin of Ptolemy." — Smith, 1882