EASTERN UNITED STATES. 339 



Body concolorous with the wings above, beneath pale 

 yellow. 



Larva and food-plant unknown. 

 Nebraska ; Whitings, Ind. 



163. PAMPHILA ARPA, Bd. Lee. 



Expanse of wings from 1.6 to 1.8 inches. 



Male. Upper surface dark olivaceous brown, the base 

 of the fore wings and along the costa with yellowish 

 scales. The cell of the fore wings, a patch before the 

 stigma, and a band outside the stigma, crossing three in- 

 tervenular spaces and a little less than half the distance 

 to the outer margin, are clear golden yellow. There 

 are also five or six yellow rays between the subcostal 

 venules. Stigma long, slender, somewhat constricted in 

 the middle, oblique, black. The hind wings are sprin- 

 kled a little with yellow scales in the middle, the inner 

 part with olivaceous hairs. 



Under side dark golden-yellow, the posterior part of 

 the fore wings blackish. Across the outer portion of 

 the fore wings are about three pale spots, there being 

 scarcely a trace of one on the submedian vein. Hind 

 wings without spots. 



Female. The upper surface the same brown as the 

 male, with a little sprinkling of yellow scales at the 

 base. The fore wings have the rays between the sub- 

 costal venules, but not so distinct, except the lower 

 two ; and there are three spots in an oblique row, one 

 on the submedian vein and two between the branches of 

 the median. Under side as in the male. 



The mature larva, according to Dr. Chapman, is nearly 

 two inches long; pale green striped with yellow, the 



