GENUS ARGYNNIS 141 



trict, the hills of which are only a few hundred feet in elevation. 

 Adiante has a weakness for sipping water at damp places by the 

 roadside, and most of my specimens were taken under those con- 

 ditions. 



Figure aa of the Plate is photographic copy of a peculiar aber- 

 rant form, in which the pallid overwashing of the underside seems 

 to have overflowed upon the upper. At the time of collection I 

 noticed the abnormal appearance of the butterfly as it was flying 

 about, and chased it desperately till I got it. 



139. Argynnis Atossa. 



No figure. 

 Atossa is a species that I have never met, although I have 

 hunted over the ground where it is said to fly, many times, both 

 before and after it was found. It is after the pattern of Adiante, 

 with the upper side obsolescent, and the underside still more pallid 

 or covered over with the overwash that obliterates the spots of 

 the underside that are usually silvered. Atossa is said to fly in 

 the Tehachapi Mountains, at the altitude of about 4,500 feet. 



140. Argynnis Eurynome. 



Plate XVI ; Figures 140, a, b. 



Fig. 140, Male, Middle Park, Colorado, no date; Dr. 

 William Barnes. 



a, Male, underside, Middle Park, Colorado, no 



date; Dr. William Barnes. 



b. Female, Central Montana, July 22, 1892; 



Author. 

 Eurynome inhabits the mountains and high plateaux of the in- 

 terior country east of the Cascade Range, in Colorado, Montana, 

 and British America, and it may be found in the whole of the 

 interior region up to the Cascades, though I have never heard of 

 such an occurrence, therefore I have included it in the list of our 

 fauna. It has a greenish tint on underside of hind wings. 



141. Argynnis Bischoffi. 



Plate XVI ; Figure 141, Male, Yukon River, from B. 

 Neumcegen, 1881 (?). 

 Bischofii has somewhat the appearance of the preceding, Eury- 

 nome, and has been called the northern form of that species ; it 

 has also on the underside the greenish or olive-greenish tint that 

 marks Eurynome; it is a little smaller, and darker, as befits its 



