Young specimens of the larva of this species were found last year, about half grown, under chips and logs in open fields early in May. They had evidently wintered in the larval state, and had but lately aroused from their winter's sleep. No description of the larva was taken until May 25th, when it was full grown.

Length, 1-25 inch, cylindrical.

Head: medium sized, flattened, black, with two diverging whitish lines down the front and one across, forming a small triangle ; a patch of dots of the same colour on sides ; palpi whitish, tipped with black ; mandibles black.

Body above, dirty brown, with a faint yellowish tinge; a dorsal line of a paler hue, and a subdorsal yellow line, most distinct from fifth to twelfth segments, nearly obsolete on the anterior ones.

On the 4th of July I found a number of eggs of this beautiful moth on the evening primrose, Œnothera Lamarckiana. They were found attached to the stalks of the young flower buds; to the sides of the calyx of the flower, and also to the young leaves at their base. The eggs were quite firmly fastened among the long stout hairs with which the cuticle of the calyx and flower stalk is covered.

In the previous paper Mr. Grote describes a new species of Agrotis, under the name of depressus, which was sent him from my collection some time ago; he also refers to Agrotis clandestina as received from me. This latter species was first determined for me by Mr. C. V. Riley, of St. Louis, Mo., and subsequently by Francis Walker, Esq., of the British Museum, Mr. Riley has figured and described the larva in his first report on ,“The Noxious Insects of Missouri,” p. 79, and my own description was published in the present volume of the Can. Ent., p. 35.