125 



liiK's, wit li yellow Ix'fwccn, llic mesial liaiid Ix'inir eiiive<l with two stroiii,' 

 anirlcs l)clow tiie median vein, tiic^ o ter two rounded and veiv lar<,'e, 

 mncli more prominent tlian in /'. tcsUifa, sliaded dilluselv witliin. In the 

 middle of tlie l)an(l is an angular, enrved row of larii'e. yellow, round spots; 

 the outer odue of the l)aud is supplemented hy a dusky oehreoiis, narrow 

 line. The suhmarijinal row of tawny Irianiiles lined with white, jireseut in 

 European examples, is usually wantin<f. Tlu; rest of the wing elear, with a 

 dark, ohlique, apical jiatcli, shading below into a dark oehreous hue. Base 

 of fringe with a dark line. Ilind wings pale yellow, with a snhterminal, 

 irregular, dark line, becoming ob.solele toward the costa. Beneath, the discal 

 dots are conspicuous, and there is a straight, dark, narnjw lint; on the outer 

 third of" the wing, all that re-ap|)ears of the outer double band above. On 

 the bind wings is a iiiint, extradiscal, curved, dentate line. 



Length of Ijody, O.oS ; of fore wing, 0.75; exj)anse of wings, l.,'i()-1.40 

 inches. 



Labrador (Moeschler) ; Brunswick, Me. (Packard) ; Biooklyn, ^Mass. 

 (Shurtleff,) Beverly, Mass. (Burgess) ; White Mountains, New Hampshire, 

 August (Sanborn, Bost. Soc. Nat. Plist.) ; Tuckerman's Ravine, Mount 

 Washington, New Hampshire, August 25 (ShnrtlefF, Bost. 8oc. Nat.' Hist.) ; 

 Blount Ascutney, Vermont (Sanl)orn, Bost. Soc. Nat. Hist.) ; near Bcrthoud's 

 Pass, Colorado, 12,000 to 13,000 feet elevation, August 16 (T. L. Mead) ; 

 Victoria, Vancouver Lsland. July (Crotch, Mus. Comp. Zoiil.). 



This pretty species is easily known by its large size, the dark-brown 

 double lines and bauds, the dark apical patch, and the two large teeth on the 

 outer side of the middle double band. 



On comparing several American examples with three from Germany, 

 received from Professor Zeller, T do not find any specific did'erence. Onr 

 specimens mostly (except the Colorado individual) want the submarginal row 

 of" triangular, tawny spots on the fore wings, which are very distinct in the 

 European examples; but, in one rubbed American specimen, there is an 

 approach to this in a series of olxsolete spots. 



The distribution in the Old World, according to Staudinger, is as f(d- 

 lows : Central and Northern Euro|)e; Ural and Altai 3Iountains; Amur. 



Larva. — "The cater])illar has the head rather small; the second segment 

 also rather small; the third segment is swollen, or furnished with a dorsal 

 band, raised transverselv. Tn color, it is rcMuarkably variable, beiuiir of one 



