PLATE XVIII. 



1. Homaemus aeneifrons Say. 



2. Galgupha atra Amyot and Serville. 



3. Amnestus spinifrons Say. 



4. Sehirus cinctus Palisot de Beauvois. 



5. Eurygaster alternata Say. 



6. Brochymena quadripustulata Fabricius. 



7. Brochymena arborea Say. 



8. Peribalus limbolarius Say. 



9. Rhytidolomia saucia Say. 



10. Rhytidolomia senilis Say. 



11. Chlorochroa uhleri Stal. 



12. Mormidea lugens Fabricius. 



13. Euschistus variolarus Palisot de Beauvois. 



14. Euschistus euschistoidcs Vollenhoven. 



15. Coenus delius Say. 



16. Menecles insertus Say. 



17. Acrosternum hilar e Say. 



18. Cosmopepla bimaculata Thomas. 



19. Banasa dimidiata Say. 



20. Meadorus lateralis Say. 



21. Elasmostcthus cruciatus Say. 



22. Perillus circumcinctus Stal. 



23. Apateticus cynicus Say. 



24. Perillus exaptus Say. 



25. Podisus placidus Uhler. 



26. Podisus modestus Dallas. 



27. Podisus maculiventris Say, — dorsal view. 



28. Podisus maculiventris Say, — lateral view. 



29. Corizus lateralis Say. 



30. Harmostes reflexulus Stal. 



31. Euthochtha galeator Fabricius. 



32. Mcgalotomus quinquespinosus Say. 



33. Acanthocephala terminalis Dallas. 



34. Anasa repetita Heidemann. 



35. Anasa tristis DeGeer, — squash bug. 



36. Merocoris distinctus Dallas. 



37. Protenor belfragei Haglund. 



38. Alydus pilosulus Herrich-Schaeffer. 



39. Alydus eurinus Say. 



40. Aradus quadrilineatus Say. 



All natural size. Photographs by B. H. Walden. 



