145 



10 c? and 1<> 9. — Of the size and form of O. ferrugaria ; bul the male 

 antennas are simple, being ciliated. Body and wings pale whitish ash. Foic 

 winss whitish ash, reddish at base, the red portion limited by a dark curved 

 line situated near the insertion of the wings; beyond is a broad light space, 

 with two dark, faint, thread-like lines; just within the middle of the wing, a 

 conspicuous, broad, blackish, even band, a little curved outward below the 

 costa; the extradiscal line narrow, black, straight in the costal region, though 

 wavy; below making a deep sinus in the discal space, and a large angular 

 projection in the first median space, and below curved and wavy in its course; 

 the median band is roseate, or light brick-red. and, near the outer edge, con- 

 tains two parallel, slightly sinuous, dark threads, bent outward below the 

 costa; a large, costo-apical, squarish, reddish-brown spot; a submarginal, 

 wavy, white line; no discal dot; fringe concolorous with the rest of the wing. 

 Hind wings whitish gray, concolorous with the anterior pair, and with seven 

 or eight line wavy lines, and a zigzag, white, submarginal line; beneath, both 

 wings with numerous common lines, of which the extradiscal is the most 

 distinct; discal dots very distinct. 



Length of body,, <? 0.35, 9, 38; of fore wing, <?, 0.45, ?. 0.48; expanse 

 of wings, 0.96 inch. 



London, Canada (Saunders); Brunswick, Me., abundant in midsummer 

 about houses (Packard, Mus. Peab. Acad. Sc.) ; Dublin, N. H. (L. W. Leo- 

 nard, Harris Coll. Mus. Bost. Soc. Nat. Hist.) ; Milton, Mass , May 25, June 

 1, July 15; Cambridge, Mass., May 20, August 1-25 (Harris Coll. Mus. Bost. 

 Soc. Nat. Hist.); Dedham, Mass. (F. W. Very, Mus. Peab. Acad. Sc); Salem, 

 .Mass., June 9 (Cassino); North Beverly, Mass., May 20, June 12-16 (Bur- 

 gess) ; Ithaca, N. Y., May 31 (Comstock, Mus. Corn. Univ.) ; Oneida, N. Y. 

 (R. Y. Hawley); Easton, Pa. (Stultz) ; Philadelphia, Pa. (Ent, Soc). 



This is the common typical American form, GueneVs var. A. I have no 

 European examples with which to compare it. Three Iceland specimens 

 only differ from these in the median band being less roseate, and with a 

 decided brownish tint. This is GueneVs var. B. 



This form may be recognized by the simple antennae, the pale, quite 

 clear, ash-colored wings, and the broad, median, roseate band, limited within 

 by the conspicuous, black, slightly-curved band. 



Staudinger gives the following distribution in the Old World : Northern 



lit P H 



