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 Northern Spring Form

BB. The spots in the middle of the hind wing distinct. (C. ladon marginata.) THE MARGINED SPRING FORM.

AA. The spots on the lower surface of wings not blurred (Plate XXXVIII, Fig. 8, 13).

B. Markings on lower side of wings comparatively heavy. Early spring butterflies. (C. ladon violacea.)

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