WM. G. DIETZ, M.D. 45 



cous, intermixed with grayish scales, with a faint greenish cupreous 

 lustre. Forewings of moderate width, costa approximately straight 

 for two-thirds its length, thence gradually depressed towards the 

 obtusely pointed apex ; ground color fuscous, suffused with brown and 

 intermixed with hair-. ike pale grayish scales, with a purple-brassy 

 lustre in certain lights ; the darker coler prevails, especially in costal 

 and apical portion of wing, and along the dorsal margin ; before the 

 middle and a littfe above the fold is a dark, elongate spot, two others, 

 larger and well marked at end of cell ; cilia gray, sprinkled in basal 

 half with fuscous and grayish scales. Hindwings as wide as the fore- 

 wings, costal margin depressed from one-third its length, not acutely 

 pointed, fuscous, especially towards the apex ; cilia grayish-fuscous, a 

 tifle over 1. Abdomen above fuscous, anal bush concolorous, under- 

 side of body grayish-fuscous. Legs grayish, more or less suffused 

 with dark brown, tarsal joints slightly paler at apex. Underside of 

 fore- and hindwings dark fuscous. Vein 5 of hindwing connate with 

 stem of 3 + 4, the latter one-half the length of vein 4. Expansion 

 12.0-15.0 mm., 0.48-0.6 inch. 



Hab. — Md. (Plummer's Island), Pa. (Hazleton). 



Four specimens in the Nat. Mus. Coll. collected by Mr. A. 

 Busck, May, June and July, 1903. A specimen, taken by the 

 writer at light, is without the spots on the forewing. Not 

 distinguishable from H. purpurocomella except by the male 

 antennae, which are not excised, very close to inconspicua Wish. 



Var. reductella. 



Two specimens in Mr. Kearfott's collection differ from 

 the typical form as follows : Larger size 16.0 and 17.0 mm. ; 

 somewhat paler ; front grayish-ochreous ; head and thorax 

 with scarcely any metallic lustre, the basal third of forewings 

 appears, especially outwardly, a trifle paler ; underside of 

 body and legs much less suffused with dark fuscous. The 

 wings relatively a trifle wider, and the hindwings more 

 obtuse. 



Hab. — Manitoba (Aweme). 



The variability in the relative position of veins 3, 4 + 5 of 

 the hindwings, find an apt illustration in these two specimens ; 

 one specimen has 3 + 4 scarcely stemmed and almost con- 

 nate with 5 ; in the second specimen, on the right side, 3 + 4 

 short stemmed, 5 arising from the stem ; left side, 3+4 

 longer stemmed, 5 connate with stem. To judge from the 

 description this form seems closely related to stygna Wish. 



TRANS. AM. ENT. SOC, XXXVI. MARCH, 1910. 



