MEMIPTERA HETEROPTERA. 



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3. Phytocoris. 



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4. Cyllecoris. 



5. Capsus. 



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b. 

 B. 



Prothorax with straight sides. - 1. Minis. 



Prothorax with reflexed sides. - 2. Lopus. 



Prothorax with widened sides. 



First joint of the antennae as long as the pro- 

 thorax, or longer. ... 



First joint of the antenna shorter than the 

 prothorax, rarely nearly equal to it in 

 length. 



Prothorax broader in front than behind. 



Prothorax not broader in front than behind. 



Prothorax long, with a distinct transverse 

 furrow. - - - - - 



Prothorax with no distinct transverse furrow. 



Prothorax with a ring-shaped ridge on the 

 fore border. .... 



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 

 metapectus. - 



Rostrum exteuding to the end of the meta- 

 pectus. - - - - - 



Rostrum hardly extending beyond the hind 

 coxae. _-"--- 



Eyes very prominent. - 



Rostrum extending to to the tip of the abdo- 

 men. - - - - - 13. PsiLOEHAMPHUS. 



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



15. Monalonion. 16. Eucerocoris. 17. Pachypetis. 

 Prothorax contracted in the middle. 18. Sphinctothorax. 



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

 First joint of the tarsi about as long as the 



second and third together. 

 Tarsi broader towards the tips. 

 Corium with no appendage. - - 22. 



Corium with an appendage. 

 Prothorax gibbous in front, and extending 



over the head. 

 Fore tibiae much dilated. - 25. 



8. Monolocoris. 



9. Bryocoris. 



10. Fulvius. 

 1 1. Anapus. 



21. Valdasus. 



eccritotarsus. 

 23. Sinervus. 



24. Ambracius. 

 Hemicocnemis. 



The four following genera are thus distinguished by Signoret. 



A. Scutellum flat. 



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



