♂.This species has the fore wings and thorax of a soft brown. The primary is covered by a pea-green patch, which does not reach the margins and is defined outwardly by a narow dark line running once deeply inwardly below vein 2 and slightly opposite the cell. Hind wings light yellowish. It appears to be allied to paenulata Clem., unknown to me, but differs by the shape of the green patch and in its not being bordered with white.

This moth, which is very common in and about Montreal, is described by Walker, in a paper by W. S. d'Urban, published in Vol. 5 of the canadian Naturalist (1860), entitled “A systematic List of Lepidoptera collected in the vicinity of Montreal.” It is also taken at Quebec, but I met with only two specimens there during several years' collecting.

Frontal costa slightly sulcate below the ocellus in the ♂. Merely depressed at the ocellus in ♀.

Median carino of pronotum slight, cut by the last transverse incision behind the middle, the anterior part slightly arcuate. Lateral carinæ distinct only on the flat posterior lobe. Pronotum with sides slightly divergent; obtuse angled behind.

The various preparations which have been recommended by different writers seem to be successful enough in attracting nocturnal Lepidoptera, while the poisons employed for quieting them seem to fail in one or more essential particulars. Cyanide of Potassium, whether alone or prepared with Plaster of Paris, does not act with sufficient readiness to prevent strong-bodied moths from fluttering so long as in a great measure to spoil the beauty of their vestiture, while the application of chloroform at night is attended with considerable inconvenience.

Basal joints of fore legs ochreous red; femora and tibia dark brown, obscurely marked with white; tarsi white dusted and annulate with brown. Intermediate legs like the first pair, except that the basal joints are brown. Intermediate legs like the first pair,except that the basal joints are brown; hind legs and the under surfaceof the abdomen white dusted with dark brown, the tarsi tinged with yellowish and the upper surface of the abdomen brownish.