766 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



Argynnis liesperis Edwards. 



ISTot uncommon in Beaver Brook Gnlcb and in Clear Creek Canon, 

 August 6 and 7. 



Another and larger species was observed at the same time in Clear 

 Creek Caiion, but it was so wild as to be unapproachable with the net, 

 and flew most of the time over the rapids of the creek. 



Melitcea nubigena Behr. 



INot rare in Clear Creek CaHon and in Beaver Brook Gulch, August 

 6 and 7. 



Melitcea maia Eeak. 



One specimen taken w^est of Colorado Springs, not far from the 

 mountains, August 16, ]^o others were seen. 



Grapta hylas Edwards. 



Two specimens of this insect were seen, August 16, on the cottonwood 

 trees growing beside the irrigating canal which bounds Colorado Springs 

 on the western side. Having laid my net down, while engaged in turn- 

 ing over chips and stones and examining the flowers, I was not able to 

 recover it soon enough to capture these beauties. One of them lodged 

 for a second on the t-^unk of a tree, in full view, but the next moment 

 flew off to a distance, and, although I wasted about a quarter of an 

 hour in trying to secure it, my labors were unsuccessful. 



Vanessa aniiopa Linn. 



One specimen captured, August 6, in Beaver Brook Gulch; two others 

 seenj but not taken. 

 Pyrameis Imntera Drury. 



One specimen seen on the plains west of Denver, August o. It settled 

 on the ground within full sight, but I was too busy with other insects 

 to spend the time in following it up. 



Fyrameis atalanta Linn. 



One specimen from Clear Creek Caiion, August 6. Only one other 

 specimen was seen, and that was torn and battered, like the one taken. 



Limenitis iveidemeyeri Edw. 



This beautiful species was tolerably common in Clear C.reeji CaSon, 

 and up the Beaver Brook almost to the top of the mountain ; certainly 

 at an altitude of more than 7,000 feet above sea-level. They generally 

 flew in the bright sunshine, with moderate rapidity, over the water, and 

 occasionally lodged upon the willows or other bushes projecting above 

 the current. Some were dusky and much battered, while others were 

 fresh and clean. I noticed that there was a marked difference in the 

 width of the white band across the wings. Both sexes were present 

 on August 6 to 8. 



Satyrus sp. 



Two specimens captured, August 6, in Clear Creek Canon. A few 

 others were seen, but they kept beyond my reach. 



