AMERICAN LEPIDOPTERA. 343 



Descriptions of DIURNAL LEPIDOPTER4 found 

 within the United States. 



BY WM. H. EDWARDS. 



Satyrns Wheeleri, n. sp. 



Male. — Expands 2.3 to 2.5 iuches. Upper side light yellow-brown, 

 clouded with dark brown, especially on the disks of each wing, the 

 dark portion forming a broad band on primaries, a narrow one on 

 secondaries, well defined outwardly but within fading insensibly into 

 the ground color; hind margins edged by a pale line, preceded by a 

 dark one, and at some distance by a dark common stripe, sometimes 

 macular on secondaries ; primaries have a broad extra-discal baud as 

 in Alope, but pale brown, in which are two large black ocelli, the 

 upper one (in all cases under inspection) sub-pyriform, as if two spots 

 of unequal size had been compressed into one, and encloses two white 

 points; the lower ocellus is larger, rounded, with white points; both 

 are enclosed in narrow yellow rings ; secondaries usually have three 

 ocelli, but sometimes the one next anal angle is wanting; these spots 

 are placed on the sub-median and two next precediug interspaces; the 

 middle one is round, about one-tenth inch in diameter, with white 

 point and yellow ring; the others are usually mere black dots. 



Under side whitish, covered with abbreviated brown streaks, most 

 dense from base to middle/)!" disk on primaries, but equally distributed 

 over whole of secondaries, both wings being crossed by an irregular 

 extra-discal brown stripe, besides which secondaries have a second 

 similar stripe nearer the base; the ocelli of primaries as on upper 

 side, but surrounded by broader and paler rings which coalesce; sec- 

 ondaries have three ocelli near costa, the two outer ones small, round, 

 the other oval, all with white dots and yellow circlets; the three 

 ocelli next anal angle distinct, also with dots and circlets. 



Body yellow-brown; legs same; palpi darker; antennae brown with 

 fine white anuulations; club ferruginous. 



Female, not known. 



From nine males taken by the naturalists of Lieutenant Wheeler's 

 Expedition, 1871, between the Cascade and Rocky Mountains, but the 

 precise locality not indicated. This fine species is one of the largest, 

 equalling the largest specimens of Alope, and may at once be distin- 



