NATHAN BANKS. 31 



tinct; around the margin are scattered brown dots. In the hind wings the vena- 

 tion near tip is brown, and the pterostignia is very prominent, being reddish 

 brown. The median is plainly bent toward the cubitus at the connecting vein- 

 let ; tiie gradate series are full and even ; the costal space at base is moderately 

 broad. In hindwings the first fork of radial sector is plainly before the fork of 

 median Expanse 16-18Tnni. 



Many specimens from Ithaca and Sea Cliff, New York; Wash 

 ington, D. C; Agricultural College, Michigan ; St. Anthony's Park, 

 Minnesota; Central Missouri; Iowa; and Douglas County, Kansas. 

 In April and May, and again from August till October. It is 

 closely allied to the European H. pint. I have seen the type in the 

 Museum of Comparative Zoologv at Cambridge, Mass. 



, Heinerobiiis kokaiieeaiiiis Currie.— Head dark, blackish on cly- 

 peus; thorax black on sides, paler in middle; abdomen dark; legs pale, with 

 faint indication of dark hands at tips of femora and tibiae. Wings hyaline, con- 

 siderably marked with brown, especially along apical and posterior margin ; the 

 gradate series margined, and a large spot on basal cross-veins; white spots along 

 the margin, pterostignia faintly reddish, venation with dark and pale spaces, but 

 cross-veinlets are wholly brown; hindwings smoky, venation mostly dark. 

 Wings slender; costal area narrow toward base, median plainly bent toward cubi- 

 tus at connecting veinlet; three radial sectors, the second arising much closer to 

 the third than to the first ; last veinlet of inner gradate series basod of the prev- 

 ious one; in hindwings the radial sector forks before forking of median. Ex- 

 jianse 14 mm. 



One specimen, female, in bad condition, taken on Kokanee Mt., 

 British Columbia, at an altitude of 9000 feet, on August 10th, by 

 Mr. Currie. The specimen is in the National Museum. In shape 

 and venation it is like H. incestus, except for the peculiar position 

 of the second radial sector (not noticed by Mr. Currie). H. mcestus 

 varies much in markings, but always differs in pale hindwings. 



Heiiierobins incestiiN Banks. — Head pale, a brown stripe below each 

 e.ve, antennae and legs pale, thorax pale, hardly brown on the sides. Abdomen 

 rather obscure brown. Wings hyaline, venation pale; with scattered light brown 

 dots, alternate brown and pale dots around margin ; gradate veins brown and 

 margined with brown; pterostignia reddish in both pairs of wings; hindwings 

 not marked, venation pale. Wings rather narrow, costal area narrow toward 

 base; median much bent toward cubitus at connecting veinlet ; no veinlet con- 

 necting median and first radial sector; three sectors, the upper branch of third 

 forked just before inner gradate series, lower branch simple; last gradate vein- 

 let of inner series below or basad of the previous one. Expanse 15-17 mm. 



Numerous specimens from various western localities; Olynipia 

 and Pullman, Washington ; Idaho; Clear Creek, Colorado (Oslar) ; 



TEANS. AM. ENT. SOC. XXXII. DKCK.MBKK, 1905. 



