ARGYNNIS. 41 



The under side of llie primaries differs from the upper in having 

 the summit dull yellow (the color of dead leaves), with six or 

 seven silver spots, and the costal spots pnpilled with silver. 



The under side of the secondaries is dull yellow, with about 

 seventy-two very brilliant silver spots, elongate, of which the 

 marginal are smaller. The upper edge at the base is also silvery. 

 Among the spots in the middle, one is strongly emarginate, or 

 nearly separated in two. 



Body fulvous above, yellowish below, with white dots on the 

 head, and silvery lines on the breast. 



Larva cylindric, pale, fulvous, with four blackish longitudinal 

 bands, of which the two dorsal are sometimes obsolete ; furnished 

 with ranges of blackish ramose spines, of which two are placed on 

 the summit of the head. Head with a whitish ray on each side, 

 lined with black ; feet black. 



Chrysalis russety brown, with some paler shades. Feeds on 

 Passijlora. 



Southern States. — E.xpands four inches. 



BOISD. 



ARGYNNIS Fab. 



Head large, at least as wide as the thorax ; antennas rather long, 

 abruptly terminated by a flattened club, grooved; palpi pilose, 

 somewhat remote ; the first article slender, naked at its extremity, 

 and pointed like a needle. Abdomen shorter than the secondaries. 

 Wings sinuate or denticulate. 



Ground color fulvous, usually with black points, forming sinu- 

 ous, transverse lines, and sometimes with a blackish border, more 

 or less wide ; the under side usually has nacred spots, or violet or 

 ferruginous nacred reflections. 



1. A. idalia Fah. Fab. Ent. emend. Ill, 145. Figurecl in Cram. pi. 44. 

 Druiy I, pi. 13. Herbst. pi. 252. Boisd. et Lee. 147, pi. 43. Lucas' 

 Hist. Nat. des Pap. Exot. pi. 56. 



Upper side of primaries fulvous, with about fifteen black spots, 

 of which the upper are linear, situated in the discoidal cellule ; 

 below these they form a zigzag, transverse line ; the others are 

 round, smaller, and disposed in a line parallel to the outer edge ; 

 this edge is covered by a wide black band, dentated within, and 



