ARTKROPODA. 



109 



HOMOPTERA (mAuchenorhynchi). Tarsi three-jointed. An- 

 tennas three- or six-jointed. Wings membranous, deflected. 



The female is often furnished with an ovipositor composed of 

 a two-valved sheath enclosing a cylindrical horny borer. 



Cicadiclse are remarkable for their song ; it is confined to the 

 males, and is due to two membranes, acted on by muscles placed 

 in a cavity at the base of the abdomen, and covered externally by 

 the dilated sides of the metasternum. 



Bolbonota. 



Enchenopa. 



Membracis. 



Tettigometrida. 



Tettigoinetra. 



FlatidtB. 



Nephesa. 



Eicania. 



Poeciloptera. 



Flata. 



Pochazia. 



Derbidts. 

 Diospolis. 

 Dei-be. 

 Otiocerus. 



Issidce. 

 Ancyra. 

 Eurybrachys. 



