132 CLASS-BOOK OF ZOOLOGY. 



52G. Into what is the Larva converted after its full growth, what is it 

 called, and what becomes of it V 



527. Of what benefit are Insects to man? 



528. In what consists the injuries done by Snout-beetles and Corn- 

 worms ? 



529. What injuries are done by Caterpillars and Grasshoppers ? 



530. What Insects are disgusting and troublesome, and what others 

 are also venomous ? 



531. Into how many Orders are Insects divided? Name them. 



SECTION XXXIII. 



1st Order — Beetles: (Cokoptera.) 



§ 532. Beetles are Insects with horny bodies, and two 

 horny wing-coverings. The Larva has nippers, and the 

 greater part of them six legs, attached to the thorax : in 

 some, (as the Maggot or Larva of the Snout-beetle,) it 

 is without feet. It generally becomes a chrysalis under- 

 ground. — Among the Beetles, the following may be men- 

 tioned. 



§ 533. The Tiger-beetle (Cicindela) has flat wing-covers, 

 a small cylindrical neck, and a thick head, with large 

 round eyes. 



§ 534. Some of the species of the genus* Tiger-beetle 

 are metallic green, spotted, or purple, sometimes varie- 

 gated ; and are generally seen on the road or in sandy 

 places, running very fast, or making short flights, like flies. 



§ 535. They are called Tiger-beetles on account of 

 their carnivorous disposition. They seize other insects 

 with their strong jaws and devour them ; and while in 

 the Larva state, they bury themselves in the sand, to in- 

 snare other Insects. 



§ 536. The Caterpillar-hunter (Calosoma) is a very 

 handsome beetle, nearly an inch in length, of a copper- 

 brown or dark-green color ; feet and antennae black. 

 This whole genus may, with propriety, be called Cater- 



* Aggregate of all the different species. 



