115 



submedian space; the fourth line, forming the outer edge of the band, runs 

 straight (though a little obliquely) from the costa to the middle of the second 

 median space, and from thence it follows a generally oblique course, and ends 

 rather near the internal angle of the wing ; above the bend in the line, the 

 scallops arc flattened, slightly marked; two slight, re-entering, whitish lines 

 cut into the band just below the costa; below the second median space, (lie 

 line curves in much less than usual, the line not being angulated ; the scallops 

 in the first and second median spaces are alike, and the two largest in the 

 line; the one behind the third median venule is smaller than the one 

 behind it; within the band, the two lines form ringlets, as usual, below the 

 median vein ; a submarginal, white, zigzag, scalloped line, there being two 

 distinct acute triangles just below the costa, and below isolated white scal- 

 lops opposite the corresponding scallops, those in the second median and 

 submedian spaces forming distinct lunules ; a dark, zigzag, black, oblique line, 

 succeeded by a dark cloud ; a marginal black line, slightly interrupted by the 

 venules ; fringe whitish, checked with dusky scales. Hind wings whitish, 

 more so than usual; a little dusky on the margin, limited within by a faint- 

 white zigzag line, within which is a dark, distinct, zigzag line, the angles being 

 sharp; beneath whitish, sprinkled with fine brown scales; the four discal 

 dots distinct on the fore wings; an extradiscal is reproduced, and beyond is 

 a row of dark spots, succeeded still beyond by white scallops ; a faint sub- 

 apical cloud. Anterior pair of legs dark, ringed with white ; middle and hind 

 pair whitish. Abdomen rather stouter than in P. truncata, the end being 

 square, and terminating in a mucronate point; pale ash, with a pair of large 

 black spots on each segment. 



Length of body, i, 0.52, 9, 0.45; of fore wings, <?, 0.57-0.72, ?, 0.63; 

 expanse of wings, 1.15-1.55 inches. 



Lake Superior (Harris Coll. Bost. Soc. Nat Hist.); White Mountains, 

 New Hampshire, August 20-30 (Scudder, Shurtleff, Mus. Bost Soc. Nat. Hist.) ; 

 Brunswick, Me. (Packard); Albany, N. Y., July 25 (Liutner); "Nova Scotia'' 

 (Walker). 



This species differs from P. truncata in the apex being less produced; 

 in the white intradiscal band ; in the angle of the outer edge of the median 

 band being much less produced ; while the band is much darker, the hind 

 wings are also much paler, and the end of the abdomen squarcr. From P. 

 prunata, to which it is also quite closely allied, if differs in (he whiter 



