BUTTERFLIES OF MONTANA. 131 



are green, the primaries having a short straight band of white spots on 

 the outer third, and the secondaries a small white spot on the costa be- 

 yond the middle, and two or three conspicuous white spots near the anal 

 angle. 



Early Stages We know practically nothing of these. 



Distribution The Rocky Mountains and California. 



Genus ERORA Scudder. 

 THE EARLY HAIR-STREAK, Erora laeta. Edwards. 



Butterfly Expanse, .75 inch. The wings are brown, glossed with 

 bright blue above; on the under side pale fawn, with a band of pale red 

 spots on both wings about the middle, and a few similar spots on the 

 outer and inner margins of the hind wings. 



Early Stages Unknown, save that the egg has been described by 

 Scudder. . 



Distribution Dyar gives it as Montana and Colorado. Holland says 

 It has been taken in Arizona. It is rare in collections. We have not 

 taken it. 



Genus STRYMON.6Hubner. 

 THE CORAL HAIR-STREAK, Strymon titus Fabricius. 



Butterfly Expanse, 1.30 inches. 32 mm. Upper surface dark brown, 

 with or without an outer marginal row of orange spots or an indistinct 

 oiange band; males with discal stigma. Under surface soft slaty brown, 

 sometimes tinged with violaceous; outer half of wings crossed by a 

 series of black spots, encircled or bordered without with white; between 

 these spots and outer margin is a series of small black lunules, bordered 

 within with white and followed without oy a corresponding series of coral 

 red or orange spots, indistinct or wanting on the fore wings, prominent 

 on the hind wings. 



Early Stages The caterpillar when full grown is sevent-enths of an 

 inch long, elliptical in shape, heavy, very small, bilobed, and shining, 

 with a streak of dull white across the front above the mandibles. Body 

 above dull green, with a yellowish tint especially on the anterior joints, 

 and thickly covered with very short brown hairs. A dark green dorsal 

 line from joint two to four; a patch of dull pink on anterior joints. On 

 the posterior joints is a much larger rosy patch, extending from the 

 posterior of joint nine to the end of the body. Posterior part of the body 

 suddenly flattened, side acutely sloped. The chrysalis is .45 inch long, 

 glossy pale brown, with many small dark brown dots, and thickly cov- 

 ered with very short brown hairs, too fine to be seen without a lens. 

 The larva feeds on the wild cherry and plum. 



Distribution It occurs from the Atlantic to the Pacific, from Maine 

 to ueorgia. At the present time a single specimen has been taken iln 

 the state, at Missoula. It is therefore quite rare. Coubeaux has a spe- 

 cimen collected at Big Sandy. Coues collected a single specimen in 1874 

 among the mountains of our northern border, called by Edwards Thecla 

 mopsus. 



