SYNOPSIS OF THE SPECIES DESCRIBED IN THE SEQUEL. 63 



5 f Face very receding. 2 longipennis Wied. 

 I Face not receding. 6 



6 ( Back of the thorax not striped. 7 

 ( Back of the thorax striped. 9 



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. 



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

 I 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. 

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

 1 Thorax and abdomen of the same color. 11 

 in ( Color of the body yellow. 12 

 ( Color of the body black. 14 

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

 I Abdomen without black dots. 13 

 1 „ ( Basal third of the wing hyaline. vernonise, n. sp.f 

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

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

 ( Scutellum black. 11 polita, n. sp. 

 1 - ( Wings much widened. 16 

 ( Wings not widened. 17 



{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. 

 , 7 j Proboscis geniculated. 18 



I Proboscis not geniculated. 19 



, g ( 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 



2q ( Front exceedingly broad. 16 solidaginis Fitch. 



\ 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 



„~ j The whole reticulation equally broken. 19 sequalis, 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. 



