130 BULLETIN UNIVERSITY OF MONTANA. 



Ing a darker band that occupies the outer two-thirds of the basal half of 

 the wing; males with a small, oval, sub-costal sex mark. The under 

 side is light brown, sprinkled with white scales so as to be hoary. Fore 

 wings with a brown bar at the end of the cell, edged outside with white; 

 a brown spot farther toward the base. Beyond the cell a somewhat zig- 

 zag white line, beyond this a submarginal row of dark brown lunate spots. 

 There are no tails, but three prominent teeth or angles to each hind wing. 

 There are white fringes to both wings. 



Early Stages The larva is green and pubescent, longitudinal stripes 

 on the back, the middle one pale yellow, the other two white. The head 

 is brown. The chrysalis is grayish, with four rows of small spots, of 

 which the two middle are black, the others ferruginous. The food plant 

 is the pine. 



Distribution From the Atlantic westward to the Rocky Mountains. 

 In Montana it has been taken at Miles City by Wiley, and at Bozeman 

 by Cooley. So far as we know at present it has not been taken west of 

 Bozeman. 

 THE ERYPHON HAIR-STREAK, Incisalia eryphon Boisduval. Fig. 94. 



Butterfly Closely resembles niphon, both on the upper and under 

 side of the wings, but easily distinguished by the fact that on the under 

 side of the fore wings the inner of the two dark bands on the outer third 

 of the wing is not sharply angulatel below the third median nervule, and 

 is in general parallel with the sub-marginal line. 



Early Stages These have not been described. 



Distribution A Pacific coast species that has travelled across the 

 ^mountains eastward as far as Miles City, Montana, where it has been 

 collected by Wiley. Cooley has collected it at Bozeman and Brandegee 

 at Mount Ascension near Helena, east of the range. We have collected it 

 Missoula and at Lo Lo Hot Springs. 



THE BROWN ELFIN or AUGUSTUS BUTTERFLY, Incisalia augustus 



Kirby. 



Butterfly Expanse, .90 inch, 23 mm. Brown on the upper side, paler 

 on the under side. The fore wings are marked below by a straight 

 incomplete median band, and the hind winks by an irregular curved 

 median band or line. back of these lines toward the base both wings 

 are darker brown. The outer half of the lower surface of the hind wings 

 a pretty uniform rust red, darkest near the margin. 



Early Stages The caterpillar is "carmine red," covered with very 

 short hair, each segment involute above, with double foveae. The chrys- 

 alis is pitchy brown, covered with very short bristly hair, the wing cases 

 paler. Holland says the food plant is unknown. Fiske thinks from ac- 

 tions the food plant is the blueberry. 



Distribution The species is found in New England and northward 

 and westward into the British Possessions. It is a boreal species. Elrod 

 has taken it at Missoula, Cooley at Bozeman at 5.400 feet, May 31. 1900. 



Genus CALLOPHRYS, Billberg. 



THE GREEN WHITE-SPOTTER HAIR-STREAK, Callophrys dumetorum 

 Boisduval. 



Butterfly Expanse, 1.10 inches, 27 mm. Dark fawn-color above, 

 sometimes tinged externally with reddish. On the under side both wings 



