This is the largest species of the genus in America. On the under side the wings are 

 creamy white, and the spots of the upper side reappear as black markings, which show forth 

 very distinctly on the lighter ground. Expanse 1.50-1.65 inch. 



The species is confined to the western half of the continent. 



(2) Chrysophanus hypophlceas (Boisduval), Plate LXXXIX, Fig. 1, 9 (The American 

 Copper). 



This is one of the commonest butterflies in the United States. Everybody has seen it flit- 

 ting about upon lawns and in gardens. The figure we give is unmistakable. Expanse 1 .00 inch. 



The caterpillar feeds upon common sorrel (Rumex acetoselld). The insect ranges from 

 Hudson Bay to the Gulf States, but does not invade the hot belt about the Gulf. 



(3) Chrysophanus epixanthe (Boisduval & Leconte), Plate LXXXIX, Fig. 2, cf (The 

 Least Copper). 



The smallest species in the genus, confined to the north. The male above has the wings 

 fuscous, shot with violet, with a few red spots near the anal angle of the hind wings. The female 

 is pale gray above, more profusely marked with dark spots than the male. Below the wings are 

 pale gray sprinkled with bluish scales at the base, marked as above. Expanse 0.85-0.95 inch. 



Common from Newfoundland to British Columbia, never south of New England. 



(4) Chrysophanus thoe (Boisduval & Leconte), Plate LXXXIX, Fig, 3, rf 1 (The Bronze 

 Copper). 



The female differs from the male in having the fore wings bright coppery red, marked with 

 a number of dark spots, three in the cell, one below it, and an irregular transverse band 



161 



