,, ( Back of the thorax not striped. 

 I Back of the thorax striped. 



SYNOPSIS OF THE SPECIES DESCRIBED IN THE SEQUEL. 63 



K ( Face very receding. 2 longipennis Wicd. 



I Face not receding. 6 



7 



itriped. 9 



- J Abdomen with black dots. obliqua Say.* 



\ Abdomen without black dots. 8 



( The band rising over the posterior transverse vein is connected with 

 the preceding on the posterior border. 3 fratria, n. sp. 



1 The band rising over the posterior transverse vein is not connected 

 |^ with the preceding. 4 suspensa, n. sp. 



f The two middle bands of the wing diverge towards the posterior 

 border. 5 unicolor, n. sp. 



1 The two middle bands of the wing are converging towards the poste- 

 rior border. 6 electa Say. 

 1 n f Thorax and abdomen differing in color. 7 insecta, u. sp. 

 Thorax and abdomen of the same color. 11 

 ( Color of the body yellow. 12 

 (. Color of the body black. 14 

 ( Abdomen with black dots. 8 palposa, n. sp. 



J. ^1 "S I 



I Abdomen without black dots. 13 



iq ( Basal third of the wing hyaline. vernoniae, n. sp.f 



( Basal third of the wing pictured. 9 suavis, n. sp. 



14 f Scutellum yellow. 10 cingulata, n. sp. 



( Scutellum black. 11 polita, n. sp. 



1 - ( Wings much widened. 16 



( Wings not widened. 17 



1 Tip of the wings with an uninterrupted white seam. 12 sparsa Wied. 

 Tip of the wings with an interrupted white seam. 

 13 rotundipennis, n. sp. 



,- f Proboscis geniculated. 18 



I Proboscis not geniculated. 19 



, R f Stigma with a limpid drop. 14 clathrata, n. sp. 



( Stigma without limpid drop. 15 humilis, n. sp. 



, Q / Reticulation of the wing not radiating at its tip. 20 



I Reticulation of the wing radiating at its tip. 21 



90 ( Front exceedingly broad. 16 solidaginis Fitch. 

 \ Front of moderate breadth. 17 seriata, n. sp. 



91 ( Wings reticulate only on the apical half. 18 Solaris, n. sp. 

 t Wings reticulate on their whole surface. 22 



22 ( The whole reticulation equally broken. 19 aequalis, n. sp. 



\ The reticulation broken much less in the middle. 23 



9 o ( Abdomen yellow. 24 



( Abdomen black. 25 



* See Appendix III. f Ibid. 



