176 



median nervules, the lower one largest and not so near 

 the outer margin. Very rare ; July. 



75. HESPERIA AHATON Harr. This species is certainly 

 very closely allied to H. cernes Boisd. and Lee. but is 

 invariably smaller than their representation of it, and in 

 the absence of specimens from the South, I shall at present 

 presume that, as is the case with the preceding species, there 

 is a southern representative of this species, which has been 

 figured by Boisduval and Leconte under the name of H. 

 cernes. The female of this species differs from its male, 

 not only as Harris has stated, but also in having the costal 

 band very pale-tawny, often obsolete, and the spots on the 

 primaries very pale, almost whitish. 



Open fields ; males quite common, females very rare ; 

 June and August. 



76. HESPERIA ONEKO nov. sp. Above dark-brown, tinged 

 slightly with ochraceous on the secondaries. Primaries 

 with a strongly arcuated band of small ochraceous spots, 

 starting from costal border at a little more than three- 

 fourths of the distance from the base, bent inward towards 

 the middle, terminating a little below centre ; two small 

 spots at the tip of the cell. Secondaries without markings. 



Beneath dark-brown, with a slight bluish tinge on sec- 

 ondaries. Primaries with the markings of the upper sur- 

 face distinctly repeated. Secondaries with a rather nar- 

 row transverse whitish-ochraceous band a little beyond the 

 middle, bent in the middle of its course, with an indistinct 

 transverse line sub-parallel to it, midway between it and 

 the base. Expanse of wings 1 1-3 in. Very rare ; I know 

 it only from Connecticut, Mr. Norton. 



77. HESPERIA HEGON nov. sp. Above and beneath uni- 

 form dull dark-brown, with faint white markings on both 

 surfaces of primaries situated as in H. Oneko ; on under 

 surface of secondaries, a submarginal series of small indis- 

 tinct whitish spots, a small white spot in the centre, and 

 another between the costal and subcostal nervures, mid- 

 way between the base and the submarginal band. Ex- 

 panse of wings nearly 1 inch. 



I have seen but a single specimen, a female taken by 

 myself at the White Mountains in the latter part of July. 



78. HESPERIA SAMOSET nov. sp. Above dark-brown with 



