Since the appearance of Dr. Braun's article and my own paper dealing with the species of this complicated group of Aster- and Solidago-feeders in which the forewing maculation is more or less similar, I have paid particular attention in field work, especially in the Maritime Provinces, to securing long series of specimens and, whenever possible, males and females in coitu. In consequence I have had before me for study several hundred specimens and have made large numbers of genitalic slides of both sexes with the especial idea of trying to discover adequate characters in these organs whereby the females of the individual species may be separated.