PERIDROMA SAUCIA.
Rather a fine moth, inhabiting Europe, though not found in England. It expands about two inches or more. The fore-wings are dark brown, sometimes suffused with a reddish tinge at the upper margin. The hind-wings are of a greyish pearl-white colour, veined with brown, with a brown shade fringing the margins. The larva is greyish-brown, and feeds on the potato-plant, where it is found during the late winter and early spring. The average time for turning from the larva to the moth stage is from six to eight weeks.