NATHAN BANKS. 33 



pale veuation, pterostigma scarcely distiiu't. Forewings rather broad, the costal 

 area at base broad, fully four times as broad as length of cross-veinlet connecting 

 subcosta and radius; otherwise similar to H. hiimuH. Expanse 18 mm. 



Females from Mt. Washington, New Hampshire (Mrs. Slosson). 



McLachlan has recorded a female from the same locality ; I have 

 not seen a European specimen, but since it is closely allied to H. 

 humuli, and said to differ in broader costal area, I think the identi- 

 Hcation is correct. 



Heinerohiiis pacificii$$ Banks. — Head pale, a brown stripe below each 

 eye. and a line at l)ase of antennse, the latter pale, thorax pale, hardly brown 

 each side; legs and abdonien pale; wings hyaline, venation pale with scattered 

 brown dots, some of those near the base darker brown ; these dots give ofT indis- 

 tinct oblique clouds, gradate veinlets mostly brown, clouded to form an indis- 

 tinct band, border with groups of brown dots, pterostigma indistinct. Wings 

 rather broad, pointed at tip, costal space narrow toward base, median much bent 

 toward cubitus at connecting veinlets; three sectors, upper branch of the third 

 forked before the inner gradate series, lower simple, l^ast gradate veinlet of 

 inner series is distinctly beyond the previous one. Hindwings not marked, 

 veins pale, except a few of the outer gradate ones. Expanse 18-21 mm. 



Many specimens from various places in the west as follows: 

 Olympia, Pullman, Seattle and Mt. Ranier, Washington ; Santa 

 Fe, New Mexico (Cockerell) ; Kaslo, British Columbia (Currie) ; 

 Fieldbrook and Placer County, Los Angeles County and San 

 Diego County, California ; Williams and Bright Angel, Arizona. 



HeinerobiuK siinulans Walk. — Face yellowish, cheeks with brown 

 stripe, a brown spot above each eye; pronotum and rest of thorax pale in mid- 

 dle, brown on sides; abdomen brown ; legs pale yellowish ; wings dusky hyaline, 

 venation pale, rather heavily marked with brown, a larger spot on basal cross- 

 veins, a band on inner gradate series, and apical margin with alternate brown 

 and white patches, outer gradate series less heavily marked, spots at forkings of 

 veins; hindwings with mostly brown venation, pterostigma rather distinct. 

 Forewings rather long and narrow, costal area at base rather narrow, not much 

 over twice the length of veinlet connecting subcosta and radius; a cross-vein 

 near base of first radial sector back to median ; last gradate of inner series just 

 beyond previous one. Expanse 17 mm. 



One specimen from Ithaca, New York, which I think is this 

 species recorded from Nova Scotia and Canada. I have not seen a 

 male. It has rather more slender wings than the allied species, and 

 is more heavily marked. McLachlan, who has seen the type in the 

 British Museum, says it is the same as H. orotypus, a rather uncom- 

 mon species in mountainous and northern Europe. 



TRANS. AM. ENT. SOC. XXXII. (5) DECEMBEE, 1905. 



