Gryllus. HEMIPTERA; 103 



2. Bulla, which are diH:inguiflied by a 



kind of creft or elevation on the 

 thorax : Their antennas are fhor- 

 ter than the thorax, and filiform. 



3. Achetce, which are known by two Seta 



or Briftles, fituate above the extre- 

 mity of their abdomen. The 

 houfe-cricket belongs to this fa- 

 mily, 



4. TetigonitC : The females in thisfcflion 



are diftinguidied by a kind of tube 

 with which the extremity of their 



abdomen is furnifihed, and through 



which they depofit their eggs in 



the ground. The antennas in 



both fexes of this family are feta^ 



ceous. 



5. Locnjlce, in which fe&ion the tail is 



fimple, without the fetss by which 

 the Achetce are diftinguifhed, or 

 the tube that terminates the tail 

 of the females in the preced- 

 ing genus. Their antenna are 

 filiform, 



G 4 Geoffrey 



