HESPERIOIDEA OF AMERICA 37 



5. Club of antennae elongate-ovate, flattened, blunt; species 



largely white or checkered Hespcna 



Club more or less fusiform and pointed 6 



6. Outer margin of primaries evenly rounded or nearly so. . .7 

 Apex of primaries subtruncate or rectangular 8 



7. Vein 11 of primaries arising just beyond middle of cell and 



reaching costa before end of cell Chwmara 



Vein 11 arising at or beyond outer third of cell and ending 

 in costa beyond end of cell Thanaos 



8. Anal angle of primaries broadly rounded; outer and inner 



margins about equal Melanthes 



Anal angle sharply rounded ; outer margin distinctly shorter 

 than inner " 



9. Cell narrow, about equal to distance between cell and costa 



Grais 



Cell normal, much wider than this distance Timochares 



Genus HESPERIA Fabricius 

 Eesperia Fab., Ent. Syst. in, (i), 258, 1793. Type Papilio 



malvae Linn. 

 Pyrgus Hbn., Verz. bek. Schmett, 109, 1820. Type Papilio 



syrichtus Fab. 

 Heliopetes Billberg, Enum. Ins. 81, 1820. Type Papilio arsalte 



Linn. 

 Syrichtus Boisd., Icones 230, 1833. Type Papilio proto Esp. 

 Scelothrix Ramb. Cat. Lep. Andal. i, 63, 1858. Type Papilio 



carthami Hbn. 

 Leucoscirtes Scud., Syst. Rev. 52 (73), 1872. Type Syrichtus 



ericetorum Boisd. 

 Muschampia Tutt, Brit. Butterflies, i, 218, 1906. Type Papilio 



proto Esp. 

 Sloperia Tutt, Brit. Butterflies i, 218, 1906. Type Hesperia 



poggei Led. 

 Powellia Tutt, Brit. Butterflies i, 218, 1906. Type Papilio sao 



Berg. 

 Favrm Tutt, Brit. Butterflies i, 218, 1906. Type, Hesperia cri- 



brellum Eversman. 

 Bremeria Tutt, Brit, Butterflies i, 296, 1906. Type Syrichtus 



bieti Obth. 



