The last days of June are literally the heyday and jubilee of insect life. The entomological world holds high carnival, though in this country they are, perhaps, more given to mass-meetings and caucuses. The earth, the air, and the water teem with insect life. The insects of mid-summer, now appear. Among the butterflies, the Wood Satyrus (Neonympha Eurythris) skips in its low flight through the pines. The larva of Grapta Progne appears on the currants, and feeds beneath the leaves on hot sunny days. The larva of Cynthia cardui may be found on the hollyhocks; the pupa state lasts twelve days, the butterfly appearing in the middle or last of July. The Hyphantria textor now lays its smooth, spherical eggs in broad patches on the under side of the leaves of the apple, which the caterpillar will ravage in August; and its ally, the Halesidota caryae, we have found ovipositing the last week in the month on the leaves of the butternut. The Squash bug, Coreus (Gonocerus) tristis (Fig. 250) is now very abundant, gathering about the roots of the squash vines, often in immense numbers, blackening the stems with their dark, blackish-brown bodies. This insect is easily distinguished from the yellow striped Squash beetle previously mentioned, by its much greater size, and its entirely different structure and habits. It is a true bug (Hemipter, of which the bed-bug is an example), piercing the leaves and stalks, and drawing out the sap with its long sucker. [Illustration: 250. Squash Bug.] In June, also, we have found that beautiful butterfly, Militaea Phaeton rising from the low, cold swamps. Its larva transforms early in June or the last week in May, into a beautiful chrysalis. The larva hibernates through the winter, and may be found early in spring feeding on the leaves of the aster, the Viburnum dentatum and hazel. It is black and deep orange-red, with long, thick-set, black spines. The Currant borer, Trochilium tipuliforme (Fig. 251), a beautiful, slender, agile, deep blue moth, with transparent wings, flies the last of the month about currant bushes, and its chrysalids may be found in May in the stems. Among moths, that of the American Tent caterpillar flies during the last of June and July, and its white cocoons can be detected under bark, and in sheltered parts of fences and out-houses. Among others of the interesting group of Silk worms (Bombycidae) are Lithosa, Crocota and allies, which fly in the daytime, and the different species of Arctia, and the white Arctians, Spilosoma, and Leucarctia, the parent of the Salt-marsh Caterpillar. [Illustration: 251. Currant Moth.]