30 NORTH AMERICAN BUTTERFLIES. 



wings small, widely bordered outward!}^ with black which is broken by 

 yellow spots along outer and upper margins and by orange scalings along 

 veins. There is a large, rectangular spot at end of central cell, within 

 which are two orange dashes. Upper border of wing, coarsely spotted, 

 Fig. 15, a. Hind wings, slightly marbled. Beneath, the spot at end 

 of central cell is repeated, but the apex of wing is greenish in lines along 

 the veins, and the hind wings are marbled with greenish, coarsely, ex- 

 cepting on lower border, and the marblings have clearly cut edges. 



Female, similar but with the dark markings more extended. Re- 

 markable as being the only described American species, in which both 

 sexes are yellow. Expands, 1.70 to 1.7.">. Rare. Habitat, Arizona, 

 Pima County. Occurs in April. 



GENUS VII. CALLIDRYAS. 

 CITRON AND ORANGE BUTTERFLIES. 



Size, medium. Colors, yellow or orange, without 

 prominent markings. Antennae, short, gradually enlarged 

 on the terminal third. Wings, rather short and rounded, 

 being without prominent angles. Abdomen, not project- 

 ing beyond hind wings. Type, C. eubule. (Plate II, 2.) 



54. CALLIDRYAS EUBULE Linn. 



Citron-colored Butterfly. 

 Male, yellow above with the outer border of both wings slightly 

 lio-hter. There are a few blackish scales at end of central cell of fore 

 wing, and a blackish marginal dot at the end of each vein. Beneath 

 decidedly tinged with orange, and the bordering points are more dis- 

 tinct and connected by a narrow rufous, marginal edging. At end of 

 central cell on fore wings, are two brownish spots, the upper of which 

 is a mere dot, the lower larger, and enclosing a silvery center, overlaid 

 with reddish. The elongated lower portion of this spot is cut by the 

 closing vein of the central cell so that a small portion of the spot is with- 

 in the cell. At end of central cell of hind Avings, but within it, is a brown 

 ringed silver spot, and above it, but nearer the outer border, is either a 

 blackish or rufous dot, or a brown silver-centered spot and both are 

 sometimes absent. Outside the spots, on both wings, is a wavy band 

 more or less distinct of reddish brown, and an indistinct band through 

 spots, and some dots on basal half of wings. 



