WM. G. DIETZ, M.D. 57 



The author makes no further comment. A specimen in 

 my possession from the Hulst collection and received from 

 Prof. John B. Smith, agrees fairly well with the above de- 

 scription. Locality, Washington territory. 



34. H. illibella n. sp. (Plate III, fig. 30.)— Palpi of moderate 

 thickness and rather short, scarcely attaining to middle of front, gray, 

 more or less densely overlaid with fuscous scales, especially on second 

 joint, extreme apex of second and terminal joint whitish, the latter 

 short, scarcely one-third the length of the second (cf). Antennas 

 moderately thick, gray, basal joint broad and short, pecten of close- 

 set setae, shaft dusted with fuscous, especially towards the apex. Head 

 and thorax gray, finely speckled with pale fuscous scales, without 

 lustre. Forewings elongate, of nearly equal width for three-fourths 

 their length, margins approximately straight for the same length and 

 equally narrowed to the apex ; ground color gray, more or less densely 

 overlaid with white scales intermixed with fuscous, giving the ap- 

 pearance of gray, the fuscous predominating along the margins, a 

 small dark fuscous spot before the middle and above the fold, an ill- 

 defined spot at two-fifths of costa, two spots at end of cell and above 

 and beneath these, on the respective margins, is an ill-defined nebu- 

 lous spot, a series of dark dashes along the base of the cilia, more 

 marked along costal border ; cilia gray, speckled with whitish and 

 fuscous scales. Hindwings under 1, evenly narrowed from about the 

 middle to the acute apex, pale gray, dusted with pale fuscous ; cilia 

 gray. Abdomen fuscous, segments edged with grayish-white scales 

 posteriorly; anal bush ochreous-fuscous. Underside of body and legs 

 grayish-white, more or less speckled or suffused with fuscous. Ex- 

 panse 12.0-13.0 mm., 0.48-0.52 inch. 



Hab. — Md. (Frederick). Three males in my collection. 



An obscurely marked form. In one specimen the spot 

 in middle of forewing is wanting, in another the costal spot 

 at two-fifths. The terminal joint of palpi is strikingly short. 

 Veins 3 + 4 of hindwing long stemmed, 5 out of stem near 

 its base. 



35. H. creseentella n. sp. (Plate IV, fig. 31.)— Palpi of mod- 

 erate length, terminal joint slender, acutely pointed, two-thirds the 

 length of the second joint, white, sprinkled within and without with 

 dark brown scales, leaving a rather broad ring at the apex of the 

 second and of terminal joint white. Antennae brownish-gray, paler 

 beneath, basal joint nearly twice as long as wide, sordid white with 

 long grayish pecten. Head and thorax sordid white. Forewings mod- 

 erately elongate, acutely pointed, costa nearly straight from the base 



TRANS. AM. ENT. SOC, XXXVI. (8) MARCH, 1910. 



