138 Tryon Reakirt on Coloradian Butterflies. 



Secondaries, olivaceous, darkest next the base, an indistinct, in 

 some specimens almost obsolete, sinuous pale, greenish-buff band, be- 

 tween the two outer rows of silver spots, and along the outer margin. 

 Twenty-two silver spots, all but the two near the base narrowly border- 

 ed anteriorly with black, arranged thus: — seven marginal spots edged 

 also below- with black ; a second row of seven spots, the first three ob- 

 long, large, the fourth, rounded, and the remaining three obovate, tra- 

 pezoidal or subcordate; a third row of five spots, the first second and 

 fourth very large, the second cut by a bar of the ground color, and 

 exterior to which, there is a buff streak; a small, oblong, silver dash 

 between the second and fourth, and a prolonged silver bar beyond; 

 anterior to the second, a round spot encircled with black, (this some- 

 times duplex), and nearer the abdominal margin an oblong mark; 

 above, a short, silver bar cut by the subcostal vein, — costal margin, 

 silvered heavily towards the base, and the abdominal, more lightly, as 

 far as the anal angle. 



Body dusky fulvous above, yellowish-white beneath ; antennas long, 

 whitish on the UDder side near the base, — their middle, and tip of club, 

 dark ferruginous, — club black. 



Female is larger, (expanse 3 — 3.25 inches), upper surface more of 

 an orange-fulvous, presents the lighter colored spots more distinctly, 

 and has the outer margin, much more suffused with black. The short 

 inner, transverse black bar, near the margin of the primaries, is not 

 directed inwardly as in the male, but terminates upon the subcostal 

 vein, at a much less angle; the distinctiveness of the S mark in the 

 cell of the secondaries, is entirely lost, as the compressed lower limb is 

 wholly merged into the body of the letter, and a slender continuation 

 is carried up above the subcostal vein, beyond the curve of the upper 

 limb; the large rounded dot within the cell, and another, outside, at 

 the origin of the subeosto-anterior nervule. 



Under surface chiefly as in the male, the color brighter, and green- 

 ish tinge more perceptible. Secondaries of a nearly uniform greenish- 

 brown, the submarginal greenish-buff band, changed to a rich olive- 

 green. Twenty-four silver spots — having, in addition to those of the 

 male, a silver lune on the anal indentation, and a silver dash, between 

 the first two spots in the third macular row; the rounded or duplicated 

 spot of the mule, is also enlarged to an oblong bar. 



The wings of this species are relatively more narrow, and more 

 elongated than in any member, with which I am acquainted, of this 

 genus. The rich olive-green coloring of its hind wiugs, is however, 



