Sept.. i 9 05.] DYAR : HESPERIIDiE OF THE UNITED STATES. 127 



0. powescheik Parker. 



I have it from Wisconsin and Michigan. 



Genus HYLEPHILA Billberg. 

 H. phylaeus Drury. 



Common in the Southern States to southern California and Mexico. 



Genus POLITES Scudder. 

 P. coras Cramer. 



Common in the eastern United States. Both sexes vary markedly 

 in the amount of reduction of the fulvous markings, so that extremes 

 might be easily thought different species. It is more familar to us 

 under the synonymical name pcckius Kirby. 



Genus ATALOPEDES Scudder. 



Synopsis of Species. 



1. Female with a fulvous submarginal band and ray in cell of hind wings above. 



campestris. 

 Female with one bifid yellow spot on hind wings above mesogramma. 



A. campestris Boisduval. 



Occurs throughout the United States in the more southern por- 

 tions ; in the Mississippi Valley as far north as Dakota. 

 A. mesogramma Latreille {cunaxa Hewitson). 



Included on the authority of Mabille, who credits the species to 

 "North America." This may refer to the West Indies or Mexico. 

 I do not know the species. 



Genus THYMELICUS Hiibner. 

 Synopsis of Species. 



1. Male stigma narrow, linear, straight and small baracoa 



Male stigma broader, thicker, somewhat sinuous, large 2 



2. Stigma nearly continuous ^ 



Stigma partly divided, showing an upper and lower black spot and an outward 



oblique black bar ' 



3. Hind wings below grayish straw color with faint outer row of pale spotS...alcina 

 Hind wings below brownish with an outer row of yellow spots and one in cell. 4 



4. Spots on hind wings below larger, diffused, nearer margin mystic 



Spots below smaller, concrete, further from the margin 5 



5. Fore wings scarcely washed with fulvous beyond the stigma siris 



Fore wings distinctly washed with fulvous beyond the stigma sylvanoides 



6. Hind wings predominantly light colored below with dark markings 7 



Hind wings dark colored below, immaculate or with light markings 8 



7. Marginal band of fore wings of male broad, heavy vibex 



Marginal band narrow, dentate brettus 



Marginal band still narrower, broken opposite cell chusca 



