A few years ago a visit was made to the Glen, in the White Mts. of New Hamphire, in the early spring, just as the first tender leafage was appearing (June 2–5), and a report of the thirteen butterflies then found was publishe in Psyche, 1874. vol, 1, p. 13–14, 18–19. Wishing to secure eggs from some of the wintering butterflies abundant in that place, which I then failed to secure from being too early, another visit was made last spring to the same place, and at the same date (June 3–7), as the season was evidently sufficiently advanced to make it practically at least a week later; and so it proved, the vegetation at the Half-way House, at the upper limit of forest growth on the Mt. Washington carriage road, being this spring exactly at the stage at which I found it in the valleys at the previous visit, the difference in elevation being over fifteen hundred feet. The sky was equally sunny in both cases.

On looking over Melsheimer's Crotch's and Henshaw's Catalogues of the described species of North American Coleoptera, many names will be seen placed as synonymical, or varietal; while a reference to the bibliography of the many synopses and monographs of families and genera in the Trans. Am. Ent. Soc., and other publications, exhibits a number still larger.

I have never seen this species, except the couple from Arabia Felix in the Berlin Museum, described by Klug, Symb. Phys., iv., pl. 35, f. 2 and 3. Rambur, p. 369, No.5, described the species after Klug's figures, Rambur and others, not excepting myself, believed that the male did not belong to the same species as the female. Klug calls it a variety. After a thorough study of the species in Berlin, I arrived at the conclusion that Klug was right, and P. cephalotes Klug shows a similar but not so exaggerated differnce between both sexes. I have carefully compared the types with the figures, and found them to be very exact.

In the Bremen Museum are specimens collected by Norwich in the Souther States in the beginning of the country, which bear evidence of having been determined by Abbot, as there are one or two MS. names credited to him. I note here merely a ♀ specimen of Parorgyia leucopheœa; this is paler, the outer line followed by brown shadings, as compared with our Northern Clintonii, and agrees with a specimen collected by myself in Alabama, and previously described in Can, Ent.

In the course of my studies I have been able to point out of number of cases in which the species illustrated by earlier authors have been identified with allied forms inhabiting the Middle and Eastern States and parts of Canada, I must think wrongly. Dr. Harris has furnished a number of instances in point, chiefly, perhaps, in interpreting the figures of Abbot. It must not be forgetten that the locality has much to do with the forms of Lepidoptera. The different climate and physical conditions of the Southern States could not fail to impress the Lepidopterous fauna of that region.

To have the specimens in a collection look well, and at the same time be in a condition such as to render their examination as easy as possible, it is necessary that they should be properly collected. The ordinary cyanide bottles prepared either with plaster of Paris, or sawdust, which are used for Lepidoptera and Coleoptera, do not furnish good specimens of Hymenoptera, and those collected in alcohol are less satisfactory.

In order to illustrate more fully his forthcoming work on New England Butterflies, the undersigned offers for sale for Two Hundred and Fifty Dollars, that wonderfully preserved Fossil Butterfly, Prodryas Persephone, of Colorado. The accompanying cut gives a rude impression of it. Less than twenty specimens of fossil butterflies are known in the world, and this is by far the most perfect and best preserved.