SYNONYMS OF THE GENEEA. 259 



Genus 9. TOSENA. 



Tettigonia, Fahr. 



Cicada, Olivier, Germar, Blanchard. 



This genus has a spine on each side of the fove-chest like that of 

 Dunduhia, to which it is nearly allied, but is distinguished by its 

 coloured wings, and by the well-defined band of transverse veins on 

 the fore-wings. 



Genus 10. DUNDUBIA. 



Tettigonia, Fahr. 



Cicada, Olivier, Gmelin, Germar, Boisduval, Westivood, Signoret. 



The opercula of the male in this genus are very variable as to 

 size ; in some species they are excessively developed and as long as 

 the abdomen ; in others they are very small or of moderate length. 



Genus 11. FIDICINA. 



Cicada, Linn., Deg. Olivier, Gmelin, Houttuin, Lamarck, Germar, 



Say, Harris, Burmeister, Blanchard, Signoret, Carreno. 

 Tettigonia, Fahr. 



Cicada has three jointed tarsi ; in Fidicina the tarsi are said to 

 have but two joints, the third being very minute or almost obsolete, 

 but the genera are hardly distinct, and Fidicina is most closely 

 allied to the larger species of Cicada. The variation of structure 

 in the opercula of the male is one of the specific characters. 



Genus 12. CICADA. 



Tettigonia, Fahr. Panzer, Leach. 



Tibicen (Ex. C. hasmatodes), Latr., Bridle. 



Hemisciera (Ex. C. capensis), Amyot et Serville. 



The variations in this genus may be gathered into fifty groups or 

 upwards, but these, although so numerous, would be indefinite as to 

 their limits, would hardly afford sectional characters, and would not 

 comprise very many species ; and the divisions are therefore deferred 

 until they can be more fully established. 



Genus 15. CARINETA. 



Tettigonia, Fahr. 



Cicada, Olivier, Gmelin, Germar, Perty^ Burmeister, Guerin, Blan- 

 chard. 



