SYNOPSIS OF THE SPECIES DESCRIBED IN THE SEQUEL. 63 



5 f Face very receding. 2 longipennis Wicd. 



\ Face not receding. 6 



,, ( Back of the thorax not striped. 7 



I Back of the thorax striped. 9 



f Abdomen with black dots. obliqua Say.* 



I Abdomen without black dots. 8 



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

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



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

 L with the preceding. 4 suspensa, n. sp. 



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

 border. 5 unicolor, n. sp. 



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

 rior border. 6 electa Say. 

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

 I Thorax and abdomen of the same color. 11 

 , , ( Color of the body yellow. 12 

 I Color of the body black. 14 

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

 I Abdomen without black dots. 13 

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

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

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

 ( Scutellum black. 11 polita, n. sp. 

 , ~ f Wings much widened. 16 

 I Wings not widened. 17 



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

 Tip of the wings with an interrupted white seain. 

 13 rotundipennis, n. sp. 



-.>, f Proboscis genicnlated. 18 



I Proboscis not geniculated. 19 



lg ( Stigma with a limpid drop. 14 clathrata, n. sp. 



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



jg f Reticulation of the wing not radiating at its tip. 20 



I Reticulation of the wing radiating at its tip. 21 



20 { Front exceedingly broad. 16 solidaginis Fitch. 

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



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

 I Wings reticulate on their whole surface. 22 



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

 I The reticulation broken much less in the middle. 23 



2 o ( Abdomen yellow. 24 



( Abdomen black. 25 



* See Appendix III. f Ibid. 



