In the proceedings of the Boston Society of Natural History, Mr. S. H. Scudder publishes a paper, “On the Synonymy of Thecla Calanus,” under date of March, 1870.

Mr. Scudder says : “In Eastern North America there are two species of Thecla, closely allied, occupying, so far as we know, the same geographical area (from Canada to Virginia or Georgia, and from Massachusetts to Iowa), and, until recently, almost invariably confounded by American entomologists. Messrs. Grote & Robinson first called public attention to the fact of their specific distinctness, although Mr. W. Saunders, both in his correspondence and MSS., had previously urged the same point.