59 



mounted, in the female, by small, dull orange, triangular spots. Un- 

 der surface ashy gray, slightly darker in the male than in the female, 

 the outer border edged with black. Fore wings with a rather large, 

 black diseal bar, edged narrowly with white, and midway between 

 this and the outer border a row of small black spots, the upper ones 

 round, the lower oval, all narrowly encircled with white, and ar- 

 ranged in a curve which bends most strongly in the interspaces be- 

 yond the cell; there are also two faint rows of transverse, dusky 

 subniarginal spots, the inner midway between the border and the 

 outermost portion of the row of black spots. On the hind wings the 

 diseal spot is scarcely, if at all, darker than the ground, and distin- 

 guishable only by being narrowly encircled with whitish; in the mid- 

 dle of the cell is a small blackish spot, and above it another, both 

 encircled with whitish; beyond is a sinuate series of spots encircled 

 with white, the upper and lower spots black or blackish, the others 

 seldom dai'ker than the ground, and thus indistinct; there is one in 

 each interspace, transverse oval in shape, those in the interspaces 

 beyond the cell lying half way between the diseal spot and the bor- 

 der. There is a marginal series of small, round, dark brown spots, 

 often dotted, especially away from the centre, with metallic spots, 

 surrounded with yellowish brown, which above, and especially in the 

 female, deepens into dull orange ; these spots are again surmounted 

 by very slight, dark brown lunules, bearing pretty large triangular 

 spots of grayish white, pointing toward, and almost reaching, the 

 extra-mesial row of spots. Expanse d 26 mm.; ? 24-26 mm. 



This butterfly does not seem to have been described, but it accords 

 best with the description of Lye. Maricopa Reak., from California. 



One pretty fresh male, another rubbed male, one fresh and one 

 rubbed, dull female were taken at Heart River Crossing, June 26. 



13. Chrysophanus Helloides (Boisd.) Edw. One pretty 

 fresh female was taken at the crossing of the Big Muddy, on the open 

 prairie, June 28. 



14. Chrysophanus Sirius Edw. A single male, badly torn 

 and rubbed, was taken on the Yellowstone River, among the sage 

 brush in the valley, July 20. 



PAPILIONIDES. 



15. Colias Philodice God. At Heart River Crossing, near 

 timber in the river bottom, June 26, ten males were taken, mostly in 

 good condition, though two of them were poor. Later, July 18 and 



