NORTH AMERICAN BUTTERFLIES. 51 



102. ARGYNNIS ID ALIA Drury. 

 Regal Silver Wing. 



Size, large. Sexes, clifFerently marked. JMale, fore wings, above 

 reddish orange with outer marginal border undivided, and continuing 

 around upper and lower margin. JNlarkings, as in type but not quite 

 as prominent. Hind Avings, blue black, with two rows of spots, the in- 

 ner bluish white and the outer orange. Central S}>ot, black with base 

 of wing within it, reddish. Fig, 21, b. Beneath, redder on f)re wings, 

 w'ith markings repeated ; additional silver spots on apex and on a sub- 

 marginal band. Hind wings, more yellowish with yellowish silver spots 

 as in Fig. 21, c. Female, differs in having the border on outer margin 

 of fore wings above, wider and enclosing a row of yellowish spots, while 

 both rows of spots on hind Aving are yellowish. Expands, 3.00 to 3.80. 

 Habitat, Maine to Nebraska, south to New Jersey and Pennsylvania, 

 also Arkansas. Occurs from July to September. 



xVsiiTAROTii Fish, is an aberrant form with only one row of spots 

 above on hind wings, and with silver spottings beneath much extended. 



103. ARGYNNIS DIANA Cram. 

 Diana Butterfly. 



Size, large. Sexes, utterly different on both surfaces. Male, above 

 velvety brown, with outer third of both wings orange, crossed by dark 

 veinings, and containing two, rather faintly indicated, rows of spots. Fig. 

 21, a. Beneath, pale orange, with outer third of fore wings unmarked, 

 and with the inner third having the usual markings of the genus, but 

 somewhat obscured by fusion, especially along veins. Hind wings, 

 dusky on basal two-thirds, with three or four faintly indicated, silver 

 spots ; a band of elongated, black spots crosses the wing ; and there is a 

 sub-marginal row of black-ringed, crescent-shaped, silver spots. 



Female, blue black above, with three rows of bluish spots crossing 

 outer third of fore wing, and two on hind, the outer narrow, the inner 

 broad, and encLjsing a roAv of black spots. Beneath, greenish or reddish 

 brown, tinged with purplish on the outer third of fore wings which are 

 crossed by two rows of bluish spots, within which are about eight blu- 

 ish spots arranged in a rather suffused pattern of black markings, as 

 seen in the male. Hind wings, Avith two narrow, black-edged, whitish 

 lines. Expands, 3.30 to 4.00. Habitat, West Virginia to Georgia, and 

 from Southern Ohio to Illinois, also Kentucky, Tennesee and Arkan- 

 sas. Occurs from July to September. 



