EASTERN UNITED STATES. 353 



Under side of fore wings yellowish 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, sprinkled 

 somewhat with white scales over the basal half. There 

 is a bar of white in the end of the cell of the fore wings, 

 a less distinct spot of the same below the middle of the 

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

 first three spots in the subcostal interspaces three-fourths 

 of the distance from the base to the 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 niedio-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 - 

 x 30* 



