[Of marked value, as is everything upon the Lepidoptera proceeding from the pen of Dr. Speyer, the present paper—an arrangement of the Hesperidæ which will generally be conceded to be quite in advance of any heretofore presented—will prove of special interest to the American student, in connection with the arrangement a short time ago presented by the same author, of some of our American species (Edwards'catalogue of the Lepidoptera of North America), associated with the European species (my Entomological Contributions, No. iv., p. 71). The admirable discussion in this paper of the value and relative importance of the several structural features of the Hesperians, cannot fail of being of eminent service in the systematic arrangement of our numerous species. Great care has been taken with the translation to render it a faithful one. The thanks of the appreciative reader are due to Mr. W. H. Edwards and Mr. O. von Meske for providing for the translation, and to prof. Uhler for its supervision. The remaining two-thirds of the paper will be given in the two following numbers of this journal.]

In Ent., x., p. 80, I stated that Dogwood was found to be the spring food-plant of this species, that is, of the larvæ proceeding from eggs laid by the form violacea; but probably there are other plants serving the same purpose, some of which bloom earlier than Dogwood, for fresh examples ofthe butterfly. form pseudargiolus, were taken on 21st April and on several subsequent days, and this was long before any of the larvæ feeding on Dogwood could possibly have produced them. prof. J.H. Comstock has recently sent me quite a number of mature larvæ taken by him at Ithaca, N. Y., feeding on the flower heads of Viburnum acerifolium, and in confinement the larvae wil1 eat clover, Nasturtium, Begonia, Asclepias, &c., eating the anthers. But I have been unable to make the females lay eggs on clover in confinement.