•-) 



06 THE CANADIAN ENTOMOLOGIST. 



clothes the canon sides, although in the bottoms of canons such trees as 

 aspen, black birch, box-elder, cottonwood and a few elms fringe the 

 streams. 



It will readily be seen that the Ridge, while on the border line 

 between the Upper Austral and Transition life zones, contains a great 

 many element:; of the latter. Among the breeding birds which belong to 

 the Transition are Audubon's Warbler, Lewis's Woodpecker, Sharp- 

 shinned Hawk, Western Warbling Vireo, and Solitare ; among the 

 mammals usually occuring in the Transition may be mentioned the 

 Yellow-haired Porcupine, Black-tailed Deer, and Beaver. 



The semi-mountainous area has also a corresponding effect upon the 

 insect fauna, and accounts for the presence of a large number of western 

 species. The occurrence of Argynnis hesperis, Phyciodes camillus 

 pallidas, Satyrus charon, Colias Alexandra Edwardsii, Lycaena 

 antiacis, L. sagittigera, and L. acmon*, Papilio zolicaon, P. indra, and 

 P. rutulus, Terias Mexicana, and Pamphila rhesus in north-west 

 Nebraska will no doubt be something of a surprise to eastern 

 lepidopterists. 



Danais plexippus, Linn. — Battered specimens numerous, but no 

 fresh ones taken until July 10 to 25, when a new brood appeared. 



Euptoieta claudia, Cramer. — Flying all the time I was in the region. 

 Especially abundant in the Bad Lands. 



Argynnis cybele, Fabr. — Common on Monarda blossoms in the 

 canons, July 10 to 27. 



Argynnis aphrodite, Fabr. — Several examples taken in July. 



Argynnis aphrodite, var. cypris, Edw. — The most abundant Argyn- 

 nid, flying abundantly from June 25 until July 27. Fresh specimens 

 were taken until July 15, after which battered specimens were the order. 

 Cypris was taken in the canons, on Monarda. 



Argynnis aphrodite, var. alcestis, Edw. — A very few taken in valley 

 meadows. 



Argynnis hesperis, Edw. — Four examples of this species were taken 

 in the middle of July, on Monarda. They are not typical, however, the 

 apical half of the under side of the fore wings being heavily clouded with 

 dark ferruginous, and the under side of secondaries very dark. 



Argynnis coronis, Behr. (?).— A number of examples of an Argynnid 



* On August 12th of the present year the writer took several examples of acmon 

 at Neligh, in north-eastern Nebraska, 



