KATYDID. A popular Hanle for several species of long-horned grasshoppers, usually of a pale-green color. Those to which this name spe eilically applies are natives of North America and are abundant in some parts of the United States. Their peculiar note is always to be heard dining the summer. and perhaps most abundantly in the evening twilight, although sometimes in the daytime. The note of one species is almost like a shrill articulation of the three :syllables, 'ka-ty-did,' following each other in quick succes sion, after which there is a pause of two or three minutes. Modified wing-membranes, by the over lapping of the wing-covers, can he made to rub against one another, and the sound is produced by the friction. It is a notieeahle fact that with these insects the day note differs from the night note. The common species in northern New England is the narrow-winged katydid (Scudder/a currieninin). The broad-winged katy did is also a common Northeastern species (Carlo phyllus prrnpitil(uHIs)s and another species is the oblong-winged katydid inblycoryphn oblongi folio). The species commonly known as the angular-winged katydid (1/ierocentrum ref i nrrris) is abundant throughout the more southern portions of the 'United States, extending as far north as New Jersey on the Atlantic coast. It
hibernates in the egg stage. The eggs are flat tened oval, and of a slate-brown color, and are laid in a double, overlapping row on the twigs of trees, the edges of leaves, and in other places. Females lay their eggs in the early fall, and con tinue to lay at intervals until killed by frost, each female laying from 100 to 150 eggs. In the spring the egg splits along its top edge, and the young katydid, very pale in color, emerges. In its northern range this species is single-brooded, but in the Southern States there are two genera tions annually. The eggs of this species are stung by the curious chalcidid parasite Eupelmus mira bilis, which has been called the •ack-rolling won der,' from the fact that its abdomen is frequently turned backward and upward until it nearly reaches the head, the hind wings being turned in the same direction, so that the insect almost forms a ball. See LOCUST.