The following genera seem to fall in between Heliothis and Plusia. They appear to be distinctively American, and there is nothing like them in the European or Asiatic faunæ, so far as appears in literature. The white species inhabit the West and South-west; and the fore wings are remarkable for their lustre, the markings consisting often of black dots, in this recalling Emydia and certain Lithosians.

Bessula Grote.

Vestiture hairy. Eyes naked. Front full, without excavation or tubercle, the infra-clypeal plate plominent. Tibiæ spinose, the fore tibiæ with a claw. Thorax untufted. Antennæ simple. Fore wings dull. Aspect of the Arctiid genus Pareuchaetes. One species from New Mexico, Luxa, Grote. Primaries very light and fady yellow. The t. p. line indicated by a curved series of faint ochrey dots. Two cellular dots and one or two more in place of t. a. line. Beneath costa and apices dusky yellowish. The coloring is very pale and the dotted markings tend to become lost. Consult: Papilio, I., 176.