On the 30th of July Mr. T. L. Mead, at Coalburgh, took two females of Grapta Dryas and tied them in a muslin bag to a branch of Hop-vine. The result was a large number of eggs, laid on the leaves and in the bag. On the 5th the eggs were all hatched. The larvæ we carried through safely, and on the 21st the first ones began to change to chrysalids. In course of the next three days all were changed, upwards of sixty. Towards maturity some of the larvæ were white, as represented in the plate of Dryas, in the “Butterflies of North America.” The others were black, like the larvæ represented in plate of Comma in the same volume.

Primaries–The costa attains the margin before the middle ; the subcostal, which is faint towards the base, sends a branch to the margin from before the middle, two others near the end of the cell, another beyond the cell and becomes furcate before the tip, one of the branches going to each margin. Cell closed by a very short oblique discal vein without branches. The median sends two branches to the margin before the end of the cell, and becomes furcate behind it. Submedian furcate at base. Wing lanceolate, with moderately long ciliæ.