EGG–Globular, smooth under a low power, but under a high one, seen to be reticulated in irregular hexagons, the ridges flat and broad, and having at the bottom of each depression a white point; color yellow-green. Duration of this stage in August 3 days, in October 6, in April 6. The egg is laid on grass, which is the larval food plant.

Argynnis Laura.

Male.–Expands 2.2 inch.

Upper side deep red-fulvous, obscured at base of primaries and still more at base of secondaries, the ground there being black with a slight dusting of fulvous ; the black markings as in the allied species, rather heavy, while the nervules of primaries, especially the discoidal, and the branches of median,–and on secondaries the branches of sub-costal, are widely bordered with black; the mesial band of secondaries confluent; fringes yellow-buff, black at the ends of the nervules.

The new edition of the Catalogue of the described Diptera of North America, by the Baron Osten Sacken, Washington, 1878, ranges doubtlessly among the most important works published on the North American Fauna. A very detailed and elaborate preface tells only in brief manner the immense amount of work done by the author since the publication of the first catalogue in 1858. A large part of new information is given at the end of the Catalogue in 335 notes.

Demonstrations from examples taken by me during the past three years, and from examples taken in Farmington, Conn., twenty years ago, give indubitable evidence that our Limenitis are plastic forms of one species, accommodating themselves readily to the environment, assuming colors from climatic effect or different seasons and localities, or for purposes of protection—the form L. disippus being mimetic of plexippus, as already suggested by authors.

Melitaea Fulvia.

Male.—Expands 1.5 inch.

Upper side brown-black over basal area of each wing, somewhat dusted rvith fulvous; or the ground color is partly replaced by fulvous, especially in the cells ; the costal margin and apex of primaries black, and both hind margins are narrowly edged by black ; all the nervures and branches black ; remainder of wings fulvous ; both have a submarginal series of fulvous spots, preceded by a black line, those of primaries at apex replaced by yellow, or obsolete ; beyond the black line a complete common series of small yellow spots ; a second on the disk, larger, and on secondaries elongated, sometimes very much so, and more or less confluent with the spots of the outer row ; on primaries a large yellow spot, edged with fulvous, next inside arc of cell, and two or three small yellow spots below this ; in cell of secondaries a small similar spot, but sometimes wanting ; fringes alternately and equally black and white.

P. Dion.

Male—Expands 1.2 inch.

Upper side has the disk, cell and basel areas pale fulvous, the latter much obscured ; costal margin also fulvous, but obscured, and inclining to red in the sub-costal interspaces; the apex and hind margin broadly bordered with fuscous; stigma long, narrow, formed by two velvety-black spots, the lower one a little back of the line of the other; the black arc of cell forms a continuation of stigma and joins a dark stripe which runs along upper side of subcostal to base, the whole forming a sub-triangular inscription such as is seen in Arpa. Secondaries have the disk to base obscure fulvous, but there is a clear fulvous ray on the outer part of this area.

Chrysops cuclux.

♀. Length 6½—9 m. m. Face and cheeks black, shining, separated by yellow pollinose stripes. Frontal callus black, ocellar space blackish ferruginous, the yellow pollen between somewhat infuscated. Palpi blackish ferruginous. Antennæ : first two joints yellow, the second infuscated; third black, base fulvous.

About one year ago I received a small bug from a gentleman in Maryland, together with the information that it was a serious enemy of the honey bee. It was stated that this bug would lie concealed among the flowers, and upon occasion would grasp a bee, and, holding it off at arm's length, would suck out its blood and life.

Chlorion aerarium.

Length one inch. Bronzed-purple ; antennæ, mandibles, tegulæ and feet black, postscutellum blue; wings dark brown, with a purple reflection, Clypeus terminated by a row of five teeth, the lateral teeth a little more remote from the intermediate teeth than the intermediate teeth are from the median tooth.

G. fasciella Cham.

G. 5-notella Cham.

With ten specimens of fasciella and two of 5-notella before me, with scarcely a trace of variation in the ten, but with the two differing from each other somewhat and both differing very decidedly from the ten, I had no doubt as to the distinctness of the two species.

Agrotis vocalis, n. s.

♂ ♀. This species seems allied to albalis and lagena. The hind wings are whitish; the fore wings are mixed gray, black and white. The lines are black, thick, single, dentate, the subterminal obsolete. A slight black basal submedian streak.