92 LEPIDOPTERA OF NORTH AMERICA. 



terminated by two black tails, of which the external one is much 

 shorter. At the external angle, near the summit, there is a wide 

 black border, which does not reach the anal angle. The latter is 

 extended somewhat in the form of a spatule, powdered on both 

 sides with golden atoms, which extend to the base of the tails. 



The upper side of the females is pale greenish-blue, and this 

 color extends scarcely beyond the middle of the wings ; spatule 

 and base of the tails, as in the males. 



Under side of all the wings in both sexes is brownish-black, with 

 three red spots, of which one is at the base of the primaries, and 

 the two others at the base of the secondaries. The latter have 

 besides, towards the 'anal angle, a macular ray of golden green, 

 followed by several white spots, powdered with some golden atoms. 

 The males often have along the edge of the superiors, a blue ray, 

 more or less distinct. 



Body and thorax above of the color of the wings. 



Abdomen red below and on the sides, and in some specimens 

 this color extends to the back. 



Under side of the breast black, with some white points which 

 extend to the base of the primaries. 



Head pointed with white ; antennae black, with the club more 

 fusiform than in most of the species of this genus. 



Larva, which feeds on Quercus, green, slightly pubescent. 

 Head and scaly feet testaceous. On the back, there is a small 

 ray, and on the sides nine oblique bands of obscure green. At 

 the base of the feet, a marginal ray of greenish-yellow. 



Chrysalis russety, pointed with brown. 



Southern States. Expands an inch and a half. 



BOISD. 



2. T. M-album Boisd. et Lee. Figured in Boisd. et Lee. pi. 26, p. 86. 



A size smaller than T. halesus. Upper side of the male blue, a 

 little violet, with a wide black border commencing at the base of 

 the primaries and extending nearly all round. 



The upper side of the female is a little morejpale, and the black 

 border is usually wider. 



In both sexes, the secondaries are furnished with two small 

 black tails, of which the external one is shorter. 



The under side of the wings is cinereous ; that of the primaries 

 is traversed towards the middle by a small white ray which begins 



