NEUEOPTEKS, OR NET-WINGED INSECTS. 175 



the autumn. These insects are about an inch and a 

 half long, and the wings shut around the body like the 

 two valves of a pea-pod. They produce sounds resem- 

 bling the words " Katy did." These are made by 

 means of a thin membrane stretched in a strong frame 

 which is situated in the overlapping portion of each 

 wing-cover. The rubbing of the frames against each 

 other, as the insect opens and shuts its wings, makes 

 the sounds. 



MIGRATORY LOCUSTS. 



These are grasshopper-like insects which have the 

 antennae short, and no long organ for laying eggs. 

 The kinds are many, and some of the tropical ones are 



Fig. 330. — Clouded Locust. 



three or four inches long. The most common grass- 

 hoppers of the United States belong in this group, and 

 are familiarly known as the Red-legged Locust, Caro- 

 lina Locust, Coral-winged Locust, Yellow-winged Lo- 

 cust, and Clouded Locust. 



NET-WINGED INSECTS, OR NEUROPTERS. 



These insects have four thin, finely net-veined wings, 

 stout jaws, and no sting. In the larva state they live 

 in the water. The Stone-Plies, Figure 331, and Ephem- 

 eras, Figure 332, have long appendages at the hind 

 part of the body. 



