173 



and a dusky patch between the basal half of the space be- 

 tween median and siibmedian on secondaries. The fringe 

 is pale brown, paler on secondaries, and the outer border of 

 both wings is narrowly edged with black. 



9 differs from S' i^^i following particulars : Primaries ; 

 the whole costal border is broadly margined with dark- 

 brown up to the sub-apical patch with which it is usually 

 confluent, and in the place of the black dash, is a broad 

 dark-brown spot occupying all the basal half of the wing 

 below the median nervure, and becoming confluent, with 

 the sub-apical patch at its upper extremity. Secondaries ; 

 the medial band is broad instead of narrow, leaving but a 

 small yellowish spot near the base. Beneath the mark- 

 ings are repeated with rather more distinctness than in 

 the $ . Expanse of wings $ 1 1-4 in. $ 1 2-5 in. 

 The $ differs from that of H. Sassacus in the spots border- 

 ing the black dash of primaries,and in their confluence with 

 the sub-apical patch, which is itself broader, as well as in 

 the transverse band of secondaries. The $ differs from 

 that of H. Sassacus in the greater extent of the black 

 patches on the primaries and their confluence with the 

 sub-apical patch, and also in the broad transverse band of 

 secondaries wholly wanting in U. Sassacus. Open fields ; 

 common from middle of June to middle of August ; from 

 White Mountains to Maryland. 



70. Hesperia Sassacus Harr. ^ differs from the 9 in 

 the velvety black dash which takes the place of the cen- 

 tral black stripe ; tliis is very narrow, very slightly curved, 

 extends from the last divarication of the median, along 

 the lower side of that nervure, across the space between it 

 and the sub-median to the latter, terminating at a point 

 about one-third the distance from the base ; it is narrowly 

 edged below with large lustrous brown scales, but 

 has no spots bordering it, as in H. incerta. Harris de- 

 scribed only the $ . Open fields ; quite rare, especially 

 the females ; June. 



71. Hespekia Wingina nov. sp. $ Above : Primaries 

 bright tawny-ycllow with a broad maroon border extended 

 inwards duskily between the nervures ; a dark-brown 

 sometimes dusky patch between sub-costal and median, 

 extending from just above last divarication of median half 

 way to the border ; the oblique dash straight, extending 



