HEMIPTERA HETEROPTERA. 



i1 







00 



000 



+ 

 ++ 



XX 







Prothorax with straight sides. - - 1. Miris. 



Prolhorax with reflexed sides. - - 2. Lopus. 



Piolliorax wilh widened sides. 

 First joint of ihe antennae as long as the pro- 

 lhorax, or longer. - - - 3. Phttocoris. 

 First joint of the antennae shorter than the 



prothorax, rarely nearly equal to it in 



length. 

 Prolhorax broader in front than behind. 

 Prolhorax not broader in front than behind. 

 Prothorax long, with a distinct transverse 



furrow. ----- 4. Cyllecoris. 



Prothorax with no distinct transverse furrow. 

 Prothorax with a ring-shaped ridge on the 



fore border. - - . - 5. Capsus. 



Prothorax with no ring-shaped ridge on the 



fore border. 

 Hind femora not or only slightly thickened 



or compressed. - - - -6. Leptomerocoris. 



Hind femora in the female, at least, very 



distinctly thickened or compressed, - 7. Eurymerocoris. 



Membrane with one areolet. 

 Rostrum not extending to the tip of the 



abdomen. 

 Body short. 



Eyes not very prominent. 

 Rostrum extending to the middle of the 



melapectus. - - - - 8. Monolocokis. 



Rostrum extending to the end of the meta- 



pectus. ----- 9, Bryocoris. 



Rostrum hardly extending beyond the hind 



coxae. ----- 10. p'uLvius. 



Eyes very prominent. ... 11. Anapus. 



Rostrum extending to to the tip of the abdo- 

 men. - - - - - 13. PSILORHAMPHUS. 



Body long, slender. 12. Myrmecoris. 14. Disphinctds. 



16. MoNALONioN. 16. EucERocoRis. 17. Pachype^-js. 

 Prolhorax contracted in the middle. 18. Sphingxothorax. 



Scutellum wilh an erect spine. 19. Helopeltis. 20. Herdonius. 

 First joint of the tarsi about as long as the 



second and third together. - 21. Valdasus. 



Tarsi broader towards the lips. 



Corium with no appendage. - - 22. Eccritotarsus. 



Corium with an appendage. - - 23. Sinervus. 



Prothorax gibbous in front, and extending 



over the head. - - - - 24. Ambracius. 



Fore libias much dilated. _ - - 25. Hemicocnemis. 



The four following genera are thus distinguished by Signoret. 

 A. Scutellum flat. 

 a. First joint of the antennae short. - - - Monalonion. 



