HesPeria mystic, Edw.–Two eggs were deposited by a beaten female in a pill box, on the 20th of June, colour pale yellowish green: strongly convex above, flattened below, and depressed or slightly concave in the centre of the flattened portion. The surface appears smooth under a magnifying power of forty.five diameters, whereas in those of Hobomok, reticulations are plainly seen under a power of twenty. The egg of Mystic appears faintly reticulate under a power of eighty diameters. One specimen produced the larva on the 28th, the other on the 29th.