312 WILLIAM T. M. FORBES 



mouse gray. Outer markings sometimes replaced by a continuous, less-contrasting 

 postmedial line, and the inner by an antemedial one interrupted over the cell. 

 12-16 mm. 



Var. fumerella Dietz is nearly even mouse gray, powdered in two shades, the 

 marks as in the type, with a continuous strongly curved postmedial line. Var. 

 quisquiliella Zeller is pale, more evenly and less contrastingly powdery; the marks 

 all obscure except the three discal dots (perhaps it is a good species). 



General. Larva in sumac heads. Moth in July. 



New York: Ithaca. 



H. minorella Dietz is probably a good species. It is suffused with dark gray, 

 except in irregular patches and on the basal third, the three discal dots con- 

 trasting. The larva lives in chestnut burs. 



7. H. busckiella Dietz. White, more or less dusted with black and suffused with 

 gray, but always with some pure white scales. Normally with base of costa light 

 brown, antemedial fascia blackish on costa, weak or broken on cell, light brown 

 and rather distinct below; orbicular a black dot, and rather beyond it a blackish 

 patch resting on costa between orbicular and reniform, often strongly contrasting. 

 Two normal discal dots; postmedial fascia with its ends just beyond the outer 

 discal dot, its middle curving out nearly half way to apex, the fascia normally 

 heavy and blackish. Terminal dots light. 16-20 mm. 



July and August. 

 Plummer's Island, Maryland. 



8. H. maligemmella Murtfeldt. Wings broad (fore wing less than four times as 

 long as wide), light yellowish fuscous, with the discal dots distinct; otherwise 

 practically immaculate. 14 mm. 



Moth in July. Larva in buds of apple. 

 Columbia, Missouri. 



9. H. gibbociliella Clemens. Luteous, lightly dusted with blackish, a little more 

 heavily on outer half, leaving costa paler at two-thirds way out, and outer margin 

 paler on both costa and dorsum; discal dots obscure, the orbicular rather more 

 distinct, rarely absent. Head and thorax concolorous. 11-15 mm. 



Atlantic States. 



10. H. villella Busck. Unicolorous light yellowish brown, immaculate; palpi 

 blackish on outer side, hind wings grayer, with yellowish fringes. Tarsi marked 

 with blackish on outer side. 15 mm. 



Larva on Andromeda ligustrina. 

 Maryland. New York: Ithaca. 



III. No antennal notch, cilia, normally short. 



11. H. iunebra Dietz. Mouse gray, slightly powdery, showing the usual three 

 discal dots only. 12 mm. 



Var. reductella Dietz is paler, less shining, and with the basal third slightly 

 paler. Manitoba. 



May to July. 



Maryland; Pennsylvania. New York: Rock City. 



Dives, aphidiella, funebra,- and purpurocomella are very similar, practically 

 identical in the female, but funebra is rather strongly frosted with white-tipped 

 scales and the third joint of the palpus is notably shorter than the second (three- 

 fourths as long), while in the other three the segments are nearly even in length; 

 purpurocomella and dives are larger and noticeably stouter than the other two 

 (expanse normally over 15 mm. H. dives is the largest and purplest, and shows only 

 the faintest trace of discal spots. 



12. H. boreasella Dietz. Fuscous, the inner margin below the cell somewhat con- 

 trasting, whitish, crossed by an oblique fuscous costal shade from the middle of 

 cell to the inner margin at a third way out. Usual dots diffuse and obscure. No 



