(■(mmiiijhirhiiiltt Sl.'pli., V-M. lir. Ia')!., 187, iP.SO. 



Mrlaiiiiipc iilunhi Oiieii., I'lnil., ii, WJ, 1S57. 



Milaiiippeflurluata Gam., Plial., ii,402, 1857. 



Mdanippr iihiila \V;ilk., List Lep. Het. Br. Mus., xxv, 1S!9(), 18()2. 



Alclaiiippcjhnliwta Walk., List Lep. Hi-t. Br. Mus., xxv, 1291, 18()2. 



2 i and 2 9. — Mule antenna) with rather long, very slender pectinations. 

 Win<>-s wliiter than usnal. Fore wings chalky-white as a ground-color: black 

 at base, often with some reddish-brown scales ; beyond, a broad white area, 

 exlendin"- to the middle of the wing, with sometimes one or two parallel, 

 laint, dark lines; the median band is twice or three times as wide on the costa 

 as on the inner edge, and often more or less obsolete behind the median vein, 

 where it is made up often of three large ringlets; anteriorly it is either rather 

 heavy and l)lackish, with the discal dot not apparent, or it is pale in the 

 middle, with the discal dot distinct (this band has sometimes a distinct red- 

 dish-brown tinge); beyond tliis median band is a broad, clear, whitish band 

 extending to the costa; beyond its costal end is a large, square, black patch, 

 interrupted by or.e or two white lines, which run in a zigzag course across 

 the wing; lielow this patch, in the outer part of the extradiscal space, is a 

 smaller I)lack patch, filling two of the scallops of the snbmarginal, clear, 

 zigzag line; the marginal row of black dots in both wings is smaller and 

 isolated, compared with most of the allied si)pcies. Hind wings whitish, with 

 four or five dusky lines and a discal dot. 



Length of l)ody, c? , 0.40, 9, 0.35; of i 'ore wing, <? , 0.50-0.60, 9, 0.52; 

 expanse of wings, 1.00-1.15 inches. 



Caribou Island, Labrador, July 17 (Packard); White Mountains, New 

 Hampshire (Shiirtleti"); Mount Washington, New Hampshire, July (Morri- 

 smi); Treat's Island, Eastport, Me., July IG (Shurtleff); Ithaca, N.Y. (Smith); 

 [Miihulelphia, I'a. (xVmer. Ent. 8oc.). 



This species also occurs in Eiiroj)e, Asia Minor, America, and the Altai 

 I\Iountains. 



Ditfers froiii the allied species by the well-i)ectinated antenna^ the chalky- 

 white wings, the forni of the dark, distinct median band, olten obsolete or 

 very narrow l)chind, and in the costo-apical black patch. In the Labrador 

 and one White ]\b»untaiii (liii:. 72) examples, the basal spot and median baud 

 havi; a decided rcddish-biown tinge, while those from the Middle States are 

 pure l)lackish, and niucli as in the European examples received from (he Vienna 

 Mus(Miiu. Tli(_' siniilc Labradoi' s|ieeiinen (expanse ot" wings, 1.15 inches) is 

 niiuh larger than any of the others, and agrees in size with the European 



