LEPIDOPTERA. 393 



nus). — In the Northeastern United States the most common 

 of the hair-streaks is this species (Fig. 466). The upper 

 surface of the wings is dark brown or blackish brown. The 

 under surface is blackish slate-brown nearly as dark as the 

 upper surface, and marked as shown in the figure. 



The larva feeds on oak and hickory. Excepting the 

 southern portion of the Gulf States, the species is found 

 throughout our territory east of the Rocky Mountains, and 

 in the southern part of Canada. 



The Olive Hair-streak, Mitoura damon (Mi-tou'ra 

 da'mon). — The upper surface of the wings is dark brown, 

 with the disk more or less deeply suffused with brassy yellow 

 in the male or tawny in the female ; the hind wing has two 

 tails, one much longer than the other, both black tipped 

 with white. The lower surface of the hind wings is deep 

 green ; both fore and hind wings are marked with white bars 

 bordered with brown (Plate VI, Fig. 6). 



The larva feeds on red cedar. The species occurs from 

 Massachusetts to Florida and westward to Dakota and 

 Texas. 



The Banded Elfin, Incisalia nipJion (In-ci-sa'h-a ni'phon). 

 — In the butterflies of the genus Incisalia the fringe of the 

 outer margin of the hind wings is slightly prolonged at the 

 end of each vein, giving the wings a scalloped outline ; 

 they also lack tail-like prolongations of the hind wings. 

 There are several species occurring on both sides of the con- 

 tinent. One of these, the Banded Elfin, is represented on 

 Plate VI (Fig. 4). In this species there is a distinct white 

 or whitish edging near the base of the under side of the 

 hind wing which limits a darker band that occupies the 

 outer two thirds of the basal half of the wing. 



This species occurs in the Eastern and Middle States. 

 The larva feeds on pine. 



The Hair-streaks described above are of moderate size 

 and modest colors. The two following will serve to illustrate 

 a somewhat different type. 



The Great Purple Hair-streak, Atlides halesus (At'li-des 



