339 



Acidalia iujrromarginata Packard. Plate 10, fig. 57. 



Acidalia rubromarginaria Pack., Proc. Bost. Soe. Nat. Hist., xiii, 391, 1871. 



6' $ and 2 9. — Brown, with a reddish tint. Body and base of both 

 wings ferruginous dull brown; both wings dusky reddish-brown at base; on 

 tore wings, this tint extends Id a little beyond the middle of the wing, its 

 outer edge irregular, angulated in the middle and excavated below. In some 

 specimens, it is crossed just before the middle of the wing by a slightly 

 oblique, dark line, on which rests an irregular row of light-brown scales; in 

 other specimens, the inner halt of the wing is entirely dusky-brown; beyond, 

 the wing is of a clear tawny brown, with a submarginal line curved and slightly 

 waved, either entire or made up of black dots on the venules, connected by a 

 slight line; this line is parallel with the outer edge of the basal dark area; a 

 marginal row of black dots ; fringe deep brick-red. Hind wings the same; 

 the dark portion at base extends nearly to the middle of the wing, and the 

 broken, wavy, curved line of dots is half-way between this and the outer edge;_ 

 fringe brick-red, contrasting well with the clear tawny brown of outer two- 

 thirds of wings. Beneath, uniformly pale tawny brown, with a common, diffuse, 

 waved, middle line, doubled on the anterior half of hind wings, inclosing a 

 narrow, oval, irregular spot, and a very faint submarginal row of minute black 

 dots; fringe red. 



Length of body, 0.28; fore wing. 35; expanse of wings, t).8U inch. 



Nahant, Mass. (Moring) ; Dallas, Texas, April 4 (Boll, Mus. Peab. Acad. 

 Sc); Central Missouri, May (Riley); Lawrence, Kans. (Snow); California 

 (Edwards). 



The Nahant example differs from the others in the dusky band of the 

 fore wing being nearer the base of the wing, while the outer dark line is less 

 sinuate below the costa, though agreeing quite well in the latter respect with 

 one or two Californian examples. The specimen from Missouri does not differ 

 from those Californian examples in which the base of the wings are clear, 

 not dusk\-, nor does it differ in size. The Kansas and Texan examples differ 

 from all the others in their different tint, being more decidedly wine-reddish. 

 Both pairs of wings are clear at base; but in the fore wings is a median diffuse 

 shade, which, however, does not extend on to the hind wings, which are clear, 

 uniformly reddish, as in the fore wings, ami with only a single black line, con- 

 sisting of connected black dots; the line 'is less sinuous than usual, and sit- 

 uated farther from the edge of the wing than usual. The species may be 



