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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.

Troilus Butterfly

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

"The Troilus Butterfly, <em>Papilio Troilus</em>, is a superb insect, the wings denticulated, black, spotted with yellow, and terminated by a swallow-tail. It lives on spice-wood and sassafras-trees; is rare in the Northern States; common in the Southern, and in the West Indies." &mdash; Goodrich, 1859

Troilus Butterfly

"The Troilus Butterfly, Papilio Troilus, is a superb insect, the wings denticulated, black,…