[L. locusta.] An insect somewhat like a grasshopper in shape, but with shorter antennae or feelers and stouter legs. Its hind legs are very strong, enabling it to make long leaps ; and its wings are beautifully colored, and from their great length give it the power of sustaining long and high occasional flights. "Locusts fly in great clouds from place to place, and eat up every green thing where they alight." In some parts of Asia and Africa they come in such numbers as to darken the sky in their flight, and they are frequently seen in southern Europe and commit great ravages there. They have also been very destructive in the western United States, where they are known as the Rocky Mountain locusts. The seventeen-year locusts live as larvae in the ground for seventeen years, and afterwards come to the surface and become winged insects. Some species remain underground for a shorter period. Locust or St. John's Bread. A tree highly valued for its wood. Its leaves are soft and velvety, and it bears clusters of white, sweet-smelling flowers. Its wood is compact and hard, of a greenish-yellow color. The honey-locust tree of America and the West Indies is a large tree, but its wood is not so valuable as that of the common locust. It bears long flat pods full of brown seeds, in a honey-like pulp. Its trunk and limbs are covered with sharp thorns.