We have seen in several of my previos papers that the Owlet Moths, or Noctuidœ of temperate North America, the United States and Canada, resemble most strongly those of Europe. The divergence lies chiefly in the greater number of species belonging to the Noctudiœ fasciatœ, or Catocalinœ; and this is a tropical feature, such forms becoming more plentiufl as we go southward, although Catacala, the typical genus of the group, does not seem to cross the equator, to which latter fact I have already called attention.