Judging by five specimens before me the early spring generation (April-May) from southern British Columbia shows several points of distinction from the second generation, appearing in the latter half of June. The size is notably smaller, (♂ 36-40 mm.; ♀ 40-42 mm.; as compared with 45-50 mm.), the discal spot of primaries, especially in the ♂, is much narrower, and more as in the European chloridice, and the green of the underside is brighter and even along the veins shows only faint yellow sprinkling.