Studies in the Theory of Descent, Volume I

by August Weismann

Aug. Weismann pinx.

Lith. J. A. Hofmann, Würzburg.

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EXPLANATION OF THE PLATES.

[Plate I].

Fig. 1. Male Araschnia Levana, winter form.

Fig. 2. Female A. Levana, winter form.

Fig. 3. Male A. Levana, artificially bred intermediate form (so-called Porima).

Fig. 4. Female A. Levana, intermediate form (Porima), artificially bred from the summer generation, agreeing perfectly in marking with the winter form, and only to be distinguished from it by the somewhat darker ground colour.