158 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 90 



Male genitalia. — Harpe short, broad, sacculus produced as a broad 

 truncate sclerotized process, cucullus bluntly pointed ; clasper a small 

 tooth about middle of harpe. Anellus a broad oval plate narrowly 

 produced posteriorly, basolateral lobes small, sparsely hairy. 

 Aedeagus long, slender, curved and terminating in a long, slender, 

 curved point ; vesica armed with a slender, curved cornutus. Vinculum 

 narrowly rounded. Lobes of transtilla short, broad, hairy, and closely 

 attached to the harpe. Tegmnen rounded. Socii moderately well 

 developed hairy lobes. 



Female genitalia. — Genital plate moderately broad at ostium, nar- 

 rower laterally. Ostium broad with a strongly sclerotized anterior 

 edge. Ductus bursae convoluted, the loop of the ductus sclerotized 

 for more than half its length ; ostium preceded by a broadly dilated, 

 sclerotized part of ductus bursae; before this a narrow membranous 

 band, anterior to which is a longer sclerotized portion of the ductus 

 bursae ; inception of ductus seminalis at the dorsoposterior edge of the 

 latter sclerotized part. Bursa copulatrix large oval with a moderately 

 large toothed signum. 



Alar expanse, 16-27 mm. 



Type. — In the United States National Museum. 



Type locality. — New Brighton, Pa. 



Food plant. — Unknown. 



Distribution. — Northeastern United States and Canada westward to 

 Idaho and Alberta. 



United States records 



Idaho: Wallace, $ ( 17-1 V-23, Otto Huelleman). 



Massachusetts: Foi'est Hills, $ (25-III-1930, no collector) ; Newton, $ 

 (25-IV-1909, William ReifE) ; Winchendon, $ (12-IV-1902, no collector). 



New York: Ithaca, Long Island (ace. Forbes). 



Pennsylvania: New Brighton, 72 S $ , 15 $ 9 (March 1902-1907, H. D. Mer- 

 rick) ; Oak Station, Allegheny County, $, $ (4-IV-1909, 23-III-1907, Fred 

 Marloff ) . 



Canadian records 



Alberta: Edmonton, $, $ (2-V-1924, Owen Bryant). 



Quebec: Aylmer, $ (9-V-1932, W. J. Brown) ; Meach Lake (April 28, 1903, 

 O. H. Young). 



Remarks. — In this species there is unusually great variation in the 

 size of the specimens. This variation is not associated with sex or 

 locality. 



The Idaho and Alberta specimens are considerably darker than 

 the types, but I can find no other external differences, and the genitalia 

 are identical. 



