EASTERN UNITED STATES. 353 



Under side of fore wings yellowisli white along the 

 costa and the outer margin, the spots of the upper 

 surface repeated, but more or less blended, the space 

 between the spots brownish black. Hind wings white, 

 faintly yellowish; a spot near the base, two irregular 

 transverse bands, and a marginal row of lunules are 

 brownish, these corresponding to the spaces between 

 the rows of white above. 



Female. — Darker, owing to the spots being smaller, 

 the marginal row of points subobsolete. Under side 

 also darker. 



Pennsylvania to the Gulf, Atlantic to the Pacific. 



178. Pyrgus Centaure^, Ramb. 



Expanse of wings 1.25 inches. 



Upper surface black, tinged with brown, with white 

 scales over basal half. A bar of white in end of cell of 

 fore wings, a less distinct spot of same below the middle 

 of cell, and a subterminal row of white spots. There 

 are first three spots in the subcostal interspaces three- 

 fourths of the distance from base to apex ; two spots be- 

 yond the cell, the upper half-way from the third spot to 

 the margin ; spot five in line with the first three ; and an 

 oblique row of four more, — two in the median interspaces 

 and the other two in the medio-submedian interspace, one 

 next to each vein. Besides this, the cross- vein at the end 

 of the cell has some white scales. In addition to these, 

 there are five white spots on the costal edge. 



The hind wings have two obscure rows of white spots, 

 the first crossing the end of the cell, the spot on the cell 

 being the most distinct ; the second subterminal, consist- 



