HESPEEIOIDEA OF A^IERICA 37 



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



largely -^hite or checkered Hesperia 



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 Chiomara 



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 



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



G-rais 



Cell normal, much wider than this distance Timochares 



Genus HESPERIA Fabricius 



Hesperia Fab., Ent. Syst. m, (i), 258, 1793. Type Papilw 



maJvae Linn. 

 Pyrgus Hbn., Verz. bek. Schmett. 109, 1820. Type Papiii/} 



syrichtus Fab. 

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



Linn. 

 Syrichtii.s Boisd., Icones 230, 1833. Type Papilw proto Esp. 

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



carihami Hbn. 

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



ericetorum Boisd. 

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



proto Esp. 

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



poggei Led. 

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



Berg. 

 Favriu Tutt, Brit. Butterflies i, 218, 1906. T\-pe, Hesperia cri- 



hrellum Eversman. 

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



hieti Obth. 



