Fig. 1. MaleAraschnia Levana, winter form.
Fig. 2. FemaleA. Levana, winter form.
Fig. 3. MaleA. Levana, artificially bred intermediate form (so-calledPorima).
Fig. 4. FemaleA. 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.
Fig. 5. MaleA. Levana, summer form (Prorsa).
Fig. 6. FemaleA. Levana, summer form (Prorsa).
Figs. 7 to 9. Intermediate forms (Porima), artificially bred from the first summer generation.
Figs. 10 and 11. Male and femalePieris Napi, winter form, artificially bred from the summer generation; the yellow ground-colour of the underside of the hind wings brighter than in the natural winter form.
Figs. 12 and 13. Male and femalePieris Napi, summer form.
Figs. 14 and 15.Pieris Napi, var.Bryoniæ, male and female reared from eggs.
Fig. 16.Papilio Ajax, var.Telamonides, winter form.
Fig. 17.P. Ajax, var.Marcellus, summer form.
Fig. 18.Plebeius Agestis(Alexis, Scop.), German winter form.
Fig. 19.P. Agestis(Alexis, Scop.), German summer form.
Fig. 20.P. Agestis(Alexis, Scop.), Italian summer form. (The chief difference between figs. 19 and 20 lies on the under-side, which could not be here represented.)
Fig. 21.Polyommatus Phlæas, winter form, from Sardinia; the German winter and summer generations are perfectly similar.
Fig. 22.P. Phlæas, summer form, from Genoa.
Fig. 23.Pararga Ægeria, from Freiburg, Baden.
Fig. 24.P. Meione, southern climatic form ofÆgeriafrom Sardinia.
END OF PART I.