440 ZOOLOGY. 



finally, the coccinella or ladybird, the cicindela, the carabus, 

 (Fig. 9), &c. 



540. The orthoptera resemble the preceding by the 

 general disposition of the organs of mastication, as well as by 

 the number and consistence of their wings, but are distin- 

 guished by the manner in which their posterior wings are 

 folded, and by the nature of their metamorphoses. The elytra 

 are less hard than in the coleoptera, and the membranous 

 wings (Fig. 465) when they are at rest are not folded trans- 

 versely, but merely longitudinally, in the manner of a fan. 

 They undergo only a semi-metamorphosis, and the larva as 

 well as the nymph resembles a perfect insect, excepting as 

 regards the wings. Finally, all are terrestrial, and most of 

 them are remarkable for the elongation of their body and for 

 the extreme development of their posterior limbs, which 

 makes them leaping animals. 



Fig. 465. Locust. 



The locusts and crickets (Fig. 421) are the principal repre- 

 sentatives of this group ; but in it are also arranged the 

 mantis (Fig. ; 424), the leaf-insect (Fig. 468), the cricket 

 (Fig. 467), the mole cricket (Fig. 423), the cockroach (Fig. 

 466), and the forficula (Fig. 429), 



