PLATE XVI. 



1. Nepa apiculata Uhler. 



2. Arctocorixa interriipta Say. 



3. Pelocoris femoratus Palisot de Beauvois. 



4. Lcthocerus americanus Leidy. 



5. Notonecta variabilis Fieber. 



6. Belostoma flumineum Say. 



7. Notonecta irrorata Uhler. 



8. Notonecta insulata Kirby. 



9. Gerris conformis Uhler. 



10. Gerris rufoscutellatus Latreille. 



1 1 . Gerris marginatus Say. 



12. Gerris remigis Say. 



13. Pseudoxenetus scutellatus Uhler. 



14. Lopidea robiniae Uhler. 



15. Lygus pratensis Linnaeus var. ohlineatus Say, — tarnished 



plant bug. 



16. Lygidea mendax Reuter. 



17. Coccobaphes sanguinareus Uhler. 



18. Poecilocapsus lineatus Fabricius, — four-lined leaf bug. 



19. Horcias dislocatiis Say. 



20. Stenotiis binotatus Fabricius. 



21. Adelphocoris rapidus Say. 



22. Stenodema trispinosum Reuter. 



23. Miris dolabratus Linnaeus. 



24. Phlegyas abbreviatus Uhler. 



25. Nysius ericae Schilling. 



26. Eremocoris ferns Say. 

 2y. Oedancala dorsalis Say. 



28. Cnemodus mavortins Say. 



29. Myodocha serripes Olivier. 



30. Lygaeus kalmii Stal. 



31. Emblethis vicarius Horvath. 

 2,2. Cimex lectularius Linnaeus. 

 7,7,. Nabis ferus Linnaeus. 



34. Phymata erosa Linnaeus. 



35. Sinea diadenia Fabricius. 



36. Reduvius personatus Linnaeus. 



37. Melanolestes abdominalis Herrich-Schaeffer. 



38. Zelus exsanguis Stal. 



39. Pselliopiis ductus Fabricius. 



40. Fitchia aptera Stal. 



41. Acholla multispinosa DeGeer. 



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



