i:rrn-:i;ri.u-:s OF THE 



100. THECLA ACADICA, Edw. 



Expanse of wings 1.2 inches. 



Upper surface dark grayish brown, costal edge of both 

 wings red or reddish, the males with the usual subcostal 

 sex-mark. Hind wings with one tail, a very slight angle 

 in place of the second. The anal portion of the hind 

 wings edged with white, and before this a distinct fulvous 

 band. 



Under side gray, varying from brownish gray to gray- 

 white. At the end of each cell a short bar edged with 

 white. Beyond this a bent row of black spots surrounded 

 with white, those on the hind wings not reaching the 

 inner margin. Beyond these is a row of black crescent- 

 like spots, bordered within with white and without by 

 fulvous, the latter fading out towards the apex of the 

 fore wings; the last and the third from the last on the 

 hind wings large, with the usual blue patch between 

 them, these two with a black outer edging. 



Of the preparatory stages of this species Mr. AVm. 

 Saunders gives substantially the following. Found feed- 

 ing on willow four succeeding years. Length .63 of an 

 inch, onisciform. Head very small, pale brown and 

 shining, drawn within joint 2 when at rest. Body above 

 green, of a moderately dark shade, thickly covered with 

 very short whitish hairs, scarcely visible without a lens. 

 From joint 3 to 10 a dorsal line of darker green than 

 the ground color. Dorsal region flat; rather wide ; bor- 

 der, a raised whitish-yellow line, beginning at joint 3 and 

 fading out on joints 12 and 13. Sides of l>ody inclined 

 at an almost acute angle and faintly striped with oblique 

 greenish-yellow lines. A whitish-yellow line borders 



