24 THE CANADIAN ENTOMOLOGIST. 



12. Wings : very dark brown, face produced 7ii^crrinia^ Lw. 



"Wrings : veins reddish, face rounded, front broad pilosus, Day. 



13. First antennal joint less than twice the length of the second 14. 



First antennal joint twice the length of the third or longer 24. 



14. Scutellum largely yellowish 15. 



Scutellum black or marked with yellow 18. 



15. Pleura $ yellow; thorax ? with yellow vittae trhittata, Say. 



Pleura $ black ; thorax 9 i''ot vittate 16. 



16. Abdomen wholly green Aldrichii, Johns. 



Abdomen with black marks 17. 



17. Antennas, front and vertex red hydroleonoides, Johns. 



Antennas, front and vertex black vertebrata, Say. 



18. Scutellum laterally green Texasiana, Johns. 



Scutellum apically green 19. 



19. Abdomen ,^ 9 ^'i^h wide dorsal line, usually narrower in (^ than in 



9 20. 



Abdomen 9 black with transverse markings, ,^ with dorsal 



line interrupta, Oliv. 



Abdomen X 9 with transverse or triangular markings 23. 



20. Third antennal joint sharply pointed ; front yellow 21. 



Third antennal joint bluntly pointed ; front shining black 22. 



21. Abdomen brown-black, with wide continuous lateral margin; 



scutellum 9 yellow microstoma, Lw. 



Abdomen with irregular median black stripe pilimana, Lw, 



22. Pile of thorax whitish ; median black stripe of abdomen 



straight Americana, Day. 



Pile of thorax yellow \ median black stripe notched on the 



sides virgo, Wied, 



23. Femora yellow ; abdominal marks usually triangular, .pitbescens, Day. 

 Femora black ; abdominal marks transverse hoodiana, Big. 



24. First and second joints of the antcnn;is black 2 



First and second joints red 26. 



25. Front and vertex wide, lateral thoracic stripe 



continuous hierogiyp/iica, Oliv. 



Front and vertex narrow ; lateral thoracic stripe abbreviated 

 anteriorly simi/is, Johns. 



26. Eyes pubescent ; scutellum of 9 yellow 27. 



Eyes glabrous ; scutellum black, witii ycWow m?LXgm .occipita/is, Johns. 



27. Abdomen $ broad, with narrow markings, pilose obscura, Oliv. 



Abdomen r^ narrow, with wide markings, pubescent. /?c?7'w;v//j, Oliv. 



(To be continued.) 



