IIESPERIOIDEA OF AMERICA 75 



cause distortion of the posterior margin of the cell so that oppo- 

 site the stigma the width of the cell is less than its distance from 

 the margin. Base of vein 3 strongly curved; apical angle of 

 cell more produced than in Pamphila; vein 7 of secondaries near- 

 er to 8 than to end of cell in male. There is much less differ- 

 ence in structure between the sexes in this genus than in Pam- 

 phila. Fig. 24. 



1. ATALOPEDES CAMPESTRIS 



Hesperia campestris Boisd., Ann. Soe. Ent. France (2), x, 316, 1852. 

 $ Hesperia sylvanoides Boisd., Ann. Soc. Ent. France (2), x, 313, 1852. 

 Hesperia huron Edw., Proc. Ent. Soc. Phil, n, 16, pi. i, ff, 1, 2, 1863. 

 Scudder, Butt. New Eng. n, 1661, 1884. 

 Holland, Butterfly Book 352, pi. xlvi, ff, 4, 5, 1898. 

 Wright, Butt. W. Coast 245, pi. xxxi, f. 435, 1905. 



Oberthiir, Etudes IX, (1), pi. coxl, ff. 2082, $ type; 2085, $ type of syl- 

 vanoides, 1905. 



Atlantic to Pacific, Gulf to northern Iowa and Illinois; March to Octo- 

 ber. 



The large stigma of the male and the hyaline spots on the primaries of 

 the female furnish a convenient means for the identification of this species. 



Genus AUGIADES Hiibner 

 Augiades Hbn., Verz. bek. Schmett. 112, 1820. Type Papilio 



sylvanus Esper. 

 Ochlodes Scud., Syst. Rev. 57, (78), 1872. Type Hesperia ne- 

 morum Boisd. 



Palpi upturned; third joint oblique, very small, without its 

 vestiture about one-quarter as long as the second. Apiculus of 

 antennae variable but never longer than diameter of club. Costa 

 of primaries flattened; outer margin more strongly curved to- 

 ward apex; cell about three-fifths as long as wing; vein 5 curv- 

 ing slightly toward 4; discocellulars very oblique. Secondaries 

 rounded, slightly lobed at anal angle. Stigma straight, moder- 

 ately heavy, extending from base of vein 3 to basal two-fifths 

 of 1, broken on 2. Mid tibiae weakly spined. Fig. 23. 



I group this rather varied lot of species because of the ex- 

 tremely short third joint of their palpi. This is not readily 

 seen except when bleached or denuded, but I have carefully ex- 

 amined sylvanus, sylvanoides, agricola, and snowi and find that 

 they agree, while the others can readily be associated on super- 

 ficial resemblance. Other structures are rather variable. 



