128 BULLETIN UNIVERSITY OF MONTANA. 



narrowly defined externally by white; a well defined black spot at the 

 anal angle of the secondaries. 



Early Stages — Unknown. 



Distribution — Found throughout the Pacific states, in Montana and 

 Colorado. Holland thinks it identical with chalcis. Taken in the state 

 at Missoula (4). 



THE STREAKED HAIR-STREAK, or LIPOROPS BUTTERFLY. 



Thecia liparops, Boisduval and LeConte. 



Butterfly — Dark brown on upper side, grayish below. The lines on 

 the underside are arranged in pairs, and very narrow. The spots at the 

 anal angle are obscure and blackish. Expanse, 1.15 inches, 29 mm. 



Early Stages — Almost entirely unknown. 



Food — The caterpillar feeds on a variety of plants, oaks, willows, the 

 wild plum and the Ericaceae. 



Distribution — It ranges through the northern Atlantic States and 

 Quebec to Colorado and Montana, but it is nowhere common. We have 

 not taken it. 



THE BANDED HAIR-STREAKED, Thecia calanus. Hubner. 



Butterfly — Expanse, 1.2 inches, 30 mm. 



The upper surface of the wings is dark brown or blacAish brown 

 There is sometimes an orange spot at the anal angle. The under side is 

 blackish slate brown, nearly' as dark as the upper surface; there is a 

 dark bar edged with bluish white at the end of the discal cell of both 

 wings, and just outside of the middle a row of small, dark, blue-edged 

 spots, which form an almost continuous line; and a submarginal series 

 of crescents, edged within with white. 



Early Stages — The caterpillar is 1.5 inches in length, slug-shaped, 

 bright grass green or purple brown in color, marked with lighter and 

 darker lines running lengthwise of the body. The food plants are oak, 

 hickory and butternut. 



Distribution — East of the Rocky Mountains. 



THE ACADIAN HAIR-STREAK, Thecia acadica, Edwards. Plate I. 

 Butterfly — Expanse, 1.5 inches, 38 mm. The upper surface of the 

 wings is of a uniform blackish slate brown; costal edge of fore wings, 

 especially near the base, tawny. Anal angle of the hind wings with a 

 submarginal, orange, lunate spot, which is indistinctly continued to the 

 inner border of the wing. The under surface is pearl gray; on each 

 wing at the end of the discal cell there is a dark bar edged with whiter 

 beyond this a bent row of roundish black spots encircled with white; and 

 beyond this a submarginal row of black lunules edged within with white, 

 and followed without by orange spots. The orange spots of the front 

 wings are inconspicuous; but on the hind wings they increase in sizze 

 toward the anal angle, except that one is largely covered by a blue patch. 

 Early Stages — Caterpillar; Length about one-half inch; slug-shaped; 

 the brown head is very small; the body is almost oval in outline and 

 grass green in color. Two yellowish stripes along the side include a 

 row of oblique short stripes of the same color. The food plant is the 

 willow. 



