(1) Grapta interrogationis (Fabricius), form fabricii Edwards, [Plate XXV], ♂ (The Question-sign).
PL. XXVI
The largest species of the genus in our fauna. Dimorphic, the upper sides of the hind wings in the form fabricii being fulvous with dark markings, those of the form umbrosa Lintner being uniformly dark, except at base. In the Middle States double-brooded. The second brood hibernates in the winged form. Expanse 2.50 inches.
Found throughout Canada and the United States, except on the Pacific Coast.
(2) Grapta comma (Harris), form dryas Edwards, [Plate XXVI], ♂ (The Comma Butterfly).
Larvæ feed on nettles; some are almost snow-white. The species is dimorphic. In the form dryas Edwards the hind wings are dark above, in the form harrisi Edwards they are lighter in color. Expanse 1.75-2.00 inches.
The range is much the same as that of the Question-mark.
PL. XXVII