How to Know the Butterflies

The Cornell classic that taught America to name what it saw: every eastern butterfly described from life, with its caterpillar, its food-plants, its habits — and how to pronounce its Latin.

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The Giant Swallow-Tail (DD Principal markings)

DD. Principal markings of the front wings parallel with the outer margin; wings black above and below.

E. Hind wings crossed near the middle of the upper surface with a band of yellow, or with a row of yellow spots; this in addition to a subterminal row of spots, and a series of marginal lunules of the same color.

F. Yellow band near the middle of the hind wings distinctly interrupted with black on the veins.

G. Tails of hind wings about four times as long as broad. (P. polyxenes), p. 62.

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