In many respects the Catocalas are among the most interesting of the moths. The contrast of color between their fore and hind wings renders them objects of great beauty, and hence these fair forms of the woods are eagerly sought after by collectors. My spare time this season was spent in collecting Catocalas. In this part of the country they may be found from the first of June till the first of November.Amasia and ultronia are seen first; I took a fine amasia on the 29th of May, and an ultronia on the 10th of June, cara and several other species may be found as late as the first of November.