iia/hi- of 



61 



stage, and as the locusl moults twice afterwa the 



final imago stagi n :hed, it may be said I three 



pupal stages. W heo we compare the freshly-hatched larva 

 with the adult, we see thai the only important differem 

 ce of v. inf 



There is aogreal change, Buch as marks the life-hisl 

 of a butterfly. Perhaps it is h\ reason of their incomplete 

 metamorphosis, the general uniformity of their habits, and 

 their living on vegetable fond, that Orthoptera are not 

 numerous in species compared with the beetles and higher 

 orders. 



The locusts lay their eggs in packets in the ground 

 (Fig. 45). With its ovipositor, which is made up of 





Tig. 46.— Rockj Mountain locusl laying n~ n oval 



mass All Datura] si a r Rili j . 



three pairs of shorl spines, the two outer pairs very 1.. 

 and stout, the locust thrusts its hind bod} deep into the 

 earth and deposits a packet of egg 



Many dangers attend the life of these it To o\ 



come or to avoid them, many of them, as catydids, 



the leaf-insects, and the stick-insects, min leaves and 

 sticks, so that insectivorous birds are di i i 'hem. 



Locusts are also attacked by parasites: 

 stick to their bodies; hair-worms, and especially the n 



