SUBFAMILY DYSPTERIDINAE Genus DYSPTERIS Hubner (1) Dyspteris abortivaria Herrich-Schaeffer, Plate XLII, Fig. 21, male. (The Bad-wing.) This pretty little moth may be easily recognized by the fact that the hind wings are so much smaller than the fore wings. It is the only species of the genus found within our territory. It is not uncommon in the Appalachian subregion. Genus NYCTOBIA Hulst Three species belong to this genus. One of them is selected for illustration. (1) Nyctobia limitata Walker, Plate XLII, Fig. 22, male. Syn. lobophorata Walker; vernata Packard. The habitat of this moth is identical with that of the last-mentioned species. It is not at all uncommon in Pennsylvania. Genus CLADORA Hulst (1) Cladora atroliturata Walker, Plate XLII, Fig. 23, male. (The Scribbler.) Syn. geminata Grote & Robinson. A neatly marked species, which is the sole representative of the genus in our fauna. The moths may be found in the early spring seated upon the trunks of trees in the forest. It is a native of the Appalachian subregion. Genus RACHELA Hulst Four species of this genus have been characterized by the late Dr. Hulst. The only one which occurs in the eastern portions of the continent we figure. (1) Rachela bruceata Hulst, Plate XLII, Fig. 24, male. The moth is found in the northern Atlantic States. It is not uncommon in western Pennsylvania.