The habits of these larvæ in Europe may not improbably differ in some respects from the habits in America. Our hot summers, as compared with England, at least, may compel more or less change. With us, speaking of my own district, and of the False Nettle, Boehmeria, as the food plant, the eggs I believe to be always laid on the young terminal leaves, as Dr. Harris states is the case with the Nettle, Urtica. I come to this conclusion, not because I have found eggs on the terminal leaves, for I do not remember that I have ever found an egg of Atalanta laid by a free female; but because the larvæ, in first stage, have always been observed on these leaves. I have repeatedly obtained eggs from females tied in bags over the food plant.