ACRIDIDjE. 



Fam. 7. CEDIPODID.E. 



A. Hind legs formed for leaping, 

 a. Body not much compressed. 



* Head not very prominent. 



f Hind border of the prothorax not truncated. 



J Prothorax not keeled. - 21. PKRISACRIS. 



JJ Prothorax keeled. 



Prosternum with a transverse ridge. 22. HEMIACBIS. 



Prosternum with no transverse ridge. 



X Keel of the prothorax much notched. - 23. MORPHACRIS. 



X X Keel of the prothorax not much notched. 



o Hind femora long. 



-+ Eyes prominent. - 24. PROSACRIS. 



-J-H- Eyes not prominent. 



n- Antennae long, very slender. - - 25. CERACRIS. 



++++ Antennae moderately long, not very slender. 

 <&* Antennae not dilated at the tips. 

 -{- Prosternum smooth. 



Costa of the fore wings not dilated. 



= Vertex much acuminated in front of the eyes. 



v Antennae depressed. 



A Eyes not oval. - - 16. TRAGOCEPHALA. 



AA Eyes oval. 17. OXYCORYPHUS. 



vv Antennae rather long, not depressed. - 12. PERACINEMA. 



= = Vertex not much accuminated in front of the eyes. 



v Vertex with no lateral furrows. - 1. PACHYTYLUS. 



vv Vertex with conspicuous lateral furrows. 



A Head narrow. 



k Prothorax with three distinct keels. - 7. STENOBOTHRUS. 



> > Prothorax with the middle keel only distinct. - 8. EPACRONIA. 

 AA Head rather thick, more globose. 



> Keel of the front disappearing near the middle ocellus. . 



5. STAURONOTUS. 

 k > Keel of the front extending almost to the clypeus. 



> Fore part of the prosternum not elevated. - 2. (EDIPODA. 



> > Fore part of the prosternum much derated transversely. 



4. URNISA. 



Costa of the fore wings dilated. - 9. ARCYPTERA. 



-\ \- Prosternum slightly tuberculate. 



Prothorax with three distinct keels. - 10. STETHEOPHYMA. 

 Prothorax with no lateral keels. 11. PARAPLEURUS. 



Antennae dilated at the tips. - 13. GOMPHOCERUS. 



Antennae short, fusiform. - - 15. PHLOCERUS. 



oo Hind femora short, broad. 



-J- Antennae approximate. - - 27. CHROTOGONUS. 



--- Antennae remote. 

 +* Prothorax not much elongated. 

 <? Head not very large, 

 -f Hind border of the prothorax not rounded. - 28. THRINCHUS. 



