GO 



INSKCTS INJURIOUS TO STAPLIC CROPS. 



during midsummer, and southeastern Kansas and Missouri 

 during late summer, apj^earing at Dallas, Texas, in 1874, 



Fig. 33. — Rocky Mount aiu Locust. Different stages of growth 



of young. 



about tlie middle of October, and even later in 1876. As 

 thus indicated, the flights are in a general south to south - 



Fig. 34.— Rocky Mountain Locusts, a, a, a, females in different 

 positions, ovipositing; b, egg-pod extracted from ground, with 

 end broken open; c, a few eggs lying loose on ground; d, e, 

 show the earth partially removed, to illustrate an egg-mass 

 already in place and one being placed ; / shows where such an 

 egg- mass has been covered up. (After Riley. ) 



easterly direction, while west of the Rockies they descend 

 to the more fertile valleys and plains, but without any such 

 regularity as east. While the rate of these flights is 



