MOLE-CRICKETS. CRICKETS. 



39 



l t 32. MOLE-CRICKET. 



30. The Mole-crickets Grillo-talpa (fg. 32) have broad, 

 flat fore legs, adapted for digging; the common Mole-cricket 

 (Grillo-talpa vulgaris) lives in the ground, and is very injurious 

 from its habit of digging subterraneous passages like moles, and 

 cutting or detaching the roots of all plants that come in its way. 



Fig. 33. CRICKET. 



31. The Crickets Gryllus (Jig. 33) resemble the mole- 

 cricket, but their fore legs are not formed for digging, although 

 some of them dig holes. The domestic cricket (Gryllus domes- 

 ticus] inhabits dwellings, and usually seeks the warmth of the 

 chimney. Crickets leap almost as well as grasshoppers, and are 

 cot unlike them. Male crickets produce that sharp sound, com- 

 monly called their song, by rubbing their thighs against the 

 wings. 



32. Grasshoppers (fgs. 34 and 35) closely resemble crickets- 

 but their tarsi have four articulations, and their antennae are long 

 and consist of numerous small articulations. Like crickets, their 

 hind legs are formed for leaping ; they walk slowly, but fly well. 

 The females deposit their eggs in the ground by means of the 



30. What are the characters of mole-crickets ? 



31. How are crickets characterized? What are their habits? How is 

 their song produced ? 



32. How are grasshoppers characterized ? What are migratory locusts ? 



