62 



NORTH AMERICAN BUTTERFLIES. 



138. ARGYNNIS BISCHOFFII Edw. 



Bischoff's Silver-wing. 

 Larger than myrina, and about as heavily marked on fore wings, 

 but the third row of spots on hind wings is broken, the lower three, only, 

 being fused, and nearly the whole of the lower half of the wing, and the 

 entire bordering line, is dusky. Fig. 27, a. Beneath, similar to euryno- 

 me, but with the hind wing tinged with greenish. Sub-marginal inter- 

 space, clear. Female, more dusky above, with most of the interspace 

 ocherous. Expands, 1.80 to l.iJO. Habitat, Sitka, Alaska. 



139. ARGYNNIS EURYNOME Edw. 



EuRYNOME Butterfly. 



Similar to atlantis, lighter above, with the marginal bordering un- 

 divided and the sub-marginal crescents are connected with it. while the 

 inverted C in central cell of hind wing is isolated, Fig. 27, b. Beneath, 

 rather paler, inclmed to greenish on hind wings, but the sub-marginal 

 interspace is clear buff, and the buff on fore wings is more extended tow- 

 ard the base. Spottings silvered on both wings. Expands, 1.70 to 

 2.00. Habitat, Colorado, Montana, and British America. Occurs in 

 June and July. 



Argynnis EURYNOME ERINNA Edw. Similar to type above, but 

 differs in being nearly covered with rusty red on lower surface of hind 

 wings, leaving very little buff. 



Fig. 24. 



Illustrating the genus Argynnis. a, under Bide, hind wing, rhodope; b, same, behreusii; c, 

 upper side same wing nevadensis; d, same, liliana. 



140. ARGYNNIS MONTIVAGA Behr. 

 MoNTWAGA Buff-wing. 

 Similar to eur}Tiome in size but differs in color, in having the sub- 

 marginal spots silvered and others dull white, or more or less tinged with 

 buff and all of the spots are black bordered. Habitat, Sierras, Califor- 

 nia and Nevada. 



