This species was described from material collected by Prof. Snow in Douglas Co., Kansas, and the type is in Coll. British Museum. It is now suspected that Gortyna erepta may be the same species with Hydrœcia lunata, and it is to be regretted that an opportunity of examining the type in British Museum Coll. has been passed over. The appearance of the reniform is characteristic in this genus. In erepta it is described as “small, a white half-moon in a blackish shade.” In lunata, “narrow, white oblique lunule, margined by black scales.” The reniform spot thus seems to be identically described in both cases. In erepta the lines are described as fuscous, simple. In lunata as single and whitish. I never saw a noctuid in which the lines were white or paler than the wing, but there is a following pale shade which sometimes persists when the dark line itself becomes obliterate. It seems as though this discrepancy might be explained away.