EASTERN UNITED STATES. 257 



by an orange patch which extends inward to the first line. 

 Outer margin of wing white, with a large pale blue patch 

 before second tail, separated from the anal angle by a 

 black spot, a white spot in the subcostal area of the 

 hind wings towards the base. Tails black, white-tipped. 

 Lower part of knob of antennae and costa fulvous. The 

 female has the black border on the upper side broader 

 than the male. 



The larva is slightly pubescent, pale green, a little 

 yellowish, with a dorsal stripe and seven oblique streaks 

 of dark green. Head black, a marginal ray of yellow, 

 slightly shaded with obscure green on its upper side. 

 Food-plant, oak. 



The chrysalis is brownish gray, with the anterior part 

 and the wing-cases pale greenish gray. 



Gulf States, Virginia, Pennsylvania, Ohio. 



97. THECTLA FAVONIUS, Sm. Abb. 



Expanse of wings from 1 to 1.3 inches. 



Upper surface brownish black, the male a little the 

 brighter. Males with a blackish sex-mark in the cell 

 of the fore wings, and a fulvous patch beyond the middle 

 of the hind wings, and a smaller spot at the anal angle. 

 The females have a similar patch, more or less distinct, 

 on the fore wings ; and both sexes have the anal portion 

 of the outer margin with a white line just within the 

 edge, continuous as a dull streak to the apex. 



The under side is brownish gray, crossed by two white 

 broken lines common to both wings, the inner forming 

 a W on the hind wings similar to that on the under side 

 of M Album, the two converging from before back, the 

 outer touching the points of the W, from which the two 

 r 22* 



