PREDACEOUS BEETLE. The predaceous beetles are among the most beneficial in agricul ture, since they prey exclusively upon insects, and principally on noxious ones. There are two principal classes of these, the predaceous ground beetles, the most useful, and the soft winged predaceous beetles. In the first class we have the Cicinelidm or Tiger beetles, and the Curabidm or Ground beetles; the latter divi ded into a number of subfamilies. Calosoma calidum, (see cut), is one of the most useful of these, the beetle and larva or which is given above. The beetle is an inch in length, with three rows of golden dots on each wing cover, and is predaceous both in the larval and perfect state. This division of the subfamily Carabides embraces the genera Carabus, Calosoma, and Cychrns. The preceding cut shows Chalcenius Pe, n,ylvanicutt, of the subfamily Chaltenides; a, male beetle; b, larva; e, d, e. front tarsus of
male and o. female magnified. Harpa his Pennsylvanicus is a neimy related species, as also is If.c ,liginaRus. The family Harpalicks embrace a very ex tensive group of beetles little infe rior to all the other subfamilies noticed. They are black or dark me tallic in color as a rule, and their size is limited in its range from a quarter of an inch to a little more than an inch in length. Their distinctive characters are diffi cult to determine except by an entomologist, and are omitted. In Harpalus Pennsylvan ca.% how ever, we have shown the under side of the anterior tarsus of the male magnified, showing the two row-i of scale-like papillce, and near the end is the notch so characteristic of the anterior tibia of the tibite spurs at its upper angle as