Genus Argynnis 



spots on both wings are much lighter. On the under side the 

 wings are as in the male sex, with the basal area and the nervules 

 of the fore wings red. Expanse, $ , 2.20 inches; ? , 2.35 inches. 



Egg. — W. H. Edwards gives the following description: "Co- 

 noidal, truncated, depressed at summit, marked vertically by 

 twenty-two or twenty-three ribs, which are as in other species 

 of the genus; the outline of this egg is much as in eurynome, 

 the base being broad, the top narrow, and the height not much 

 more than the breadth; color yellow." 



Caterpillar. — The same author has given us a description of 

 the caterpillar immediately after hatching; but as the young larvae 

 were lost after being sent to Maine to be kept over winter we do 

 not yet know the full life-history. 



The range of this species is northern California and Utah, so far 

 as is known at present. 



(34) Argynnis rupestris, Behr, Plate XII, Fig. 8, $ . Fig. 9, 

 $ , under side (The Cliff-dwelling Fritillary). 



Butterfly, $ . — The upper side of the fore wings is deep reddish' 

 fulvous, with the black markings very heavy. The fore wings on 

 the under side are buff, shaded with red at the base and on the 

 inner margin. The spots are buff, without any silver. The hind 

 wings are buff, mottled with cinnamon-red, sometimes dark, 

 sometimes lighter. The marginal belt is narrow, buff, en- 

 croached upon by the darker color of the median area at the ends 

 of the oval spots. None of the spots is silvered, except very 

 lightly in exceptional cases. 



$ . — The female is much like the male on the upper side, with 

 the dark markings much heavier, the ground-color somewhat 

 paler, and the marginal row of spots quite light. The wings on 

 the under side are more brightly tinted than in the male, and the 

 marginal spots are more or less silvered. Expanse, $ , 2.00 inches; 

 ? , 2.20 inches. 



Early Stages. — Nothing is as yet known about the egg and 

 larva. 



This species is quite abundant at a considerable elevation upon 

 Mount Shasta, Mount Bradley, and in the Weber Mountains in 

 Utah. 



(35) Argynnis laura, Edwards, Plate XII, Fig. 11, $ ; Fig. 12, 

 $ (Laura). 



Butterfly, $ . — The upper side is deep reddish-fulvous, with 



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