107 



two (lots in each interspace. Fringe ash-colored, sometimes checkered, and 

 often with a dark line within the middle. Hind wings clear smoky pale-ash, 

 with a single, obsolete, much-curved line, usually represented by an obscure 

 row of venular dots ; sometimes a diffuse, faint, submarginal line. Beneath, 

 finely dusted with brown; the discal dots distinct; two parallel extradiscal 

 lines, the inner often absent, the outer is the reproduction of the outer line 

 above, and bent and scalloped as above; a dark apical cloud; the marginal 

 line and checkers in the fringe more distinct than above. On the hind 

 wings, three much-curved lines, the two inner scalloped anteriorly. Legs 

 dark, ringed narrowly with white. ■ Abdomen with twin black spots on each 

 segment, edged behind with white. 



Length of body, <?, 0.42-0.50, 9, 0.45-0.48; of fore wing, <J, 0.55-0.64, 

 ?, 0.63-0.70; expanse of wings, 1.05-1.25 inches. 



Caribou Island, Straits of Belle Isle, Labrador, August (Packard); 

 White Mountains, New Hampshire, September 29, Tuckerman's Ravine 

 (Shurtleff, Mus. Bost. Soc. Nat. Hist.); White Mountains, August 20-30 

 (Scudder) ; New Hampshire (Dodge); Deering, N. H., August 18 (Cassino); 

 New Hampshire (Harris Coll.); Mount Ascutney, Vermont, August (Sanborn, 

 Mus. Bost, Soc. Nat. Hist.) ; base of Mount Katahdin, Maine, August 15 ; 

 Brunswick, Me. (Packard); Salem, Mass., August 31, September 23 (Cassino); 

 Amherst, Mass.-, September 20, (L. W. flooded) ; New York (Mead and 

 Smith); Trenton Falls, N. Y r . (Osten-Sacken, Mus. Comp. Zool.); Penn- 

 sylvania (H. Sachs); Missouri (Riley); California (Edwards); Sanzalito, 

 Cal. (Behrings) ; Victoria, Vancouver Island, July (Crotch, Mus. Comp. 

 Zool.). 



This is an exceedingly variable species in this country as well as in 

 Europe; but it may usually be recognized by the acute fore wings, with the 

 inner and outer russet-brown bands, the acute jagged projections of the outer 

 line extending out farther than usual; by the oblique, black, apical streak, 

 and the want of any cloud beneath the line. It is nearest allied to P. kersiliata, 

 from which it differs in the more acute fore wings, the russet-brown bands, 

 and the large projection of the outer line. In some specimens, however, the 

 direction of the outer line is much as in hersiliata. A common variation is 

 in the absence of the brown bands, and in the size and extent of the large 

 projection of the outer line and the depth of the scallops. Sometimes the 

 line between the projection and the costa is quite direct in its course, and the 



