Egg.—Globular, slightly flattened above, more decidedly so below; lower half smooth; upper half deeply grooved, the interspaces rounded and marked with fine transverse impressed lines ; whitish, the upper half sometimes dotted with dark brown ; transverse diameter nearly ½ mm. [The top of this egg closely resembles that of the unarmed Rustic (Agrotis saucia) figured in Riley's 8th Report, page 37, fig. 24.]

This insect appears in the perfect or moth state (fig. 9) during the latter part of June. When its wings are expanded it measures from one inch to one inch and a quarter across. The fore wings are dark brown on the inner margin and grayish on the outer margin with a dot near the middle, a spot near each angle and several longitudinal streaks along the hind margin dark brown. The hind wings of the male are brownish or dirty white, those of the female dusky brown; the body is light brown, the thorax of a darker shade.

Œdematophorus lugubris, n. s.

Front of head and palpi very dark fuliginous, the vertex slightly lighter. Form of palpi as in O. Baroni. Antennæ dotted above with white and blackish scales, tawny brown beneath. Thorax color of vertex. Abdomen slender, with scales slightly raised at extremities of joints, dark fuliginous brown, rather copiously sprinkled with black scales.

I send you a few specimens of an insect which I have found parasitic on the larvæ of P. cardui. For several successive summers I have reared a number of these caterpillars, with which our thistles in most seasons abound. I observed variations in size and color of the larvæ found feeding on the same plant, which led me to suppose that they might not belong to the same species.

During the past season I have had an opportunity of raising the larvæ of these two interesting species of insects, and as I do not know of any easily accessible description of either in the larval state, I give below the descriptions from my note book for the benefit of the readers of the Entomologist.

The Deyrolle carton containing the specimens, which are in the same position as returned by Mr. Meade, bears the inscription by the Baron von Osten-Sacken : “This collection was arranged at my request by Mr. R. H. Meade, especially with a view of ascertaining whether any of the species are common to Europe and N. America.” I have published this list for the same reason as the Anthomyidae.

I have received from Mr. H. G. Hubbard some larvæ and pupæ, with the case, labeled as follows: “The Simulium larvæ and pupæ were collected on the rocks at the foot of the fals of Michipicotin River, Lake Superior, in shallow pools and gutters of rapid water. There were large patches of rock suriace densely covered with either the larvæ or pupæ, so closely packed as to resemble a growth of aquatic vegetation. The black flies were very abundant in the woods.”

Since I first catalogued our species of Bombyciæ, under Herrich-Schæffer's later designation of Cymatophorinæ, in the Proc. of the Entomological Society of Philadelphia for May, 1863, there have been but few additions to the group. Nor have the then debatable points been settled. The validity of expultrix as a “species” is still doubtful.

In the April number of the Canadian Entomologist I described a new Aphis affecting Pinus australis belonging to the Section Lachnini.

Having been studying the Aphididae of Florida for the past two years, a quantity of new material has accumulated on my hands, representing nearly all the known North American genera.

Trochilium Grande, n. p.—General appearance of T. Ceto (Melittia Cucurbitæ Harr.) but very much larger, expanding 1¾ inches.

Antennæ blackish. Palpi reddish orange. Head white in front, dark lustrous greenish gray on top. Collar red. Thorax above dark greenish same as top of head. Abdomen red, each segment outwardly edged with black.