General Considerations. 



229 



species, ranging from Maine to Florida, and from the 

 Atlantic to Nebraska. It passes the winter in the imma- 

 ture condition, sheltering in meadows and in tufts of 

 grass, and becoming active whenever the weather is mild. 

 It is sometimes found in winter in the early larva stages, 

 but more often in the pupa state, and becomes fledged 

 toward the end of April. 



It differs generically from the Rocky Mountain Locust, 

 which hibernates in the egg state. This Green-striped 

 Locust, as its name implies, has, when mature, a broad 

 green stripe on the front wings, and by its narrower, 



LFig. 41.] 



Green-stkiped Locust: -a, larva; &, perfect insect. 



humped and keeled thorax or fore-body (Fig. 41), may 

 at once be distinguished from the dreaded Rocky Moun- 

 tain pest. Like so many other species of its family it 

 occurs in two well marked varieties, one in which, in 

 addition to the stripe on the front wings, the whole body 

 and hind thighs, above, are pea-green ; the other in which 

 this color gives way to pale-brown. In both varieties the 

 hind wings are smoky, with the basal third greenish. 



The species noticed by Mr. Dunkley to hatch out late 

 and to lay eggs in the fall, was more probably femur- 

 rubrum than spretus. 



The species of the genus Tettix also hibernate in the 

 half-grown and sometimes in the full-grown condition, 

 and are frequently supposed to be the young of spretus. 

 These insects are very active, and are at once distinguished 

 by the small head, great breadth across the middle of the 



