_The Ghost Moth, hepialus humuli_, p. 198.—There is a division of moths in England, called swifts, or ghost moths, having all the same habit of flight described by Mr. Knapp, as the origin of their name of “Ghosts.” The particular moth alluded to by the author, is very common in England; their white, satiny wings are easily seen in the twilight, and as fragments of these are frequently found in the morning scattered about, it is supposed that night-hawks and owls feed much on their bodies. The female lays a number of small, black eggs, resembling gunpowder. Mr. Gosse, in his “Canadian Naturalist,” mentions a moth or Bombyx, found in Canada, the Dragon Moth, _hepialus argenteomaculatus_, belonging to the same family; “I was surprised and pleased to observe the striking similarity, not only of shape and general appearance, but also of manners, to the English species of that family. They continue in one place, dancing from side to side on the wing, just over the herbage, within a space of a yard or two. A large female I caught, on being pinned, began to eject her small, white eggs with great rapidity, driving them to a considerable distance.” The same moth is found in Massachusetts, and doubtless in other parts of the United States; it is included in Prof. Hitchcock’s “Catalogue of the Animals and Plants of Massachusetts,” p. 72. _Painted Lady, cynthia cardui._—This insect ranks with the largest and most beautiful of European butterflies, and is one of the few creatures of its race very widely diffused over the world, being found alike, it is said, in the western and eastern, the northern and the southern hemispheres. In North America they are more common than in England, where they are rather rare. They have been found in China and Western Asia, as well as in Africa, and travelers declare that they are to be met with in Otaheite and Australia. These pretty creatures are indeed great rovers; they will frequently, when on the coast, sail out straight to sea, and are usually very bold in their flight, which is higher than that of other species. One of the most singular incidents on record, connected with entomology, is related of this species of butterfly. A migration of these insects occurred some years since in Switzerland, on the Lake of Neufchatel during the month of March; they flew with great rapidity from north to south, moving in a column from ten to fifteen feet in breadth, in compact order, and continued passing in this manner for upward of two hours. Although many flowers yielding honey were in bloom at the time, not a butterfly alighted, but all continued their strange flight. Other instances of the same kind have been noticed in Europe and South America, but we do not remember to have ever seen any allusion to migrations of this kind, among our native butterflies. The caterpillar of the Painted Lady feeds on the spear thistle, whose thick leaves it nevertheless succeeds in rolling up as a cover for its chrysalis.