210 NATHAN BANKS. 



fore wings rather long, the apical margin very oblique and quite long, discal cell 

 nearly twice as long as its pedicel, anastomosis nearly straight, vein at bases of 

 subapicals oblique, first subapical cell is fully three times as far on thyridial as 

 first apical on discal cell, the third apical is narrow at base, but does not indent 

 the anastomosis, in hind wings the third apical is narrow at base, but the fourth 

 is about as wide as second ; about ten spines basad of subapical spurs on bind 

 legs. Expanse 50 mm. 



Olyrapia, Washington (Kincaid). 



SERICOSTOMATID^. 



Helicopsyctae califoriiica n. sp.— Head with mostly white hairs, a 

 bunch of black ones over each eye; palpi mostly black haired; antennae pale 

 yellowish, basal joint with long whitish hair and some black ; thorax with mostly 

 whitish hair; abdomen brown, with gray hair; legs with short, almost S(rale- 

 like hairs, first pair darker than others, the femora dark at base, and the tibiae at 

 tip, the tarsi black and white, the other tarsi less marked with black, the other 

 femora mostly pale, the other tibiae a little infiiscated ; fore wing rather densely 

 clothed with black and yellowish hair, giving the surface a shining appearance, 

 api(^al fringe jet black, quite long and prominent at lower apical angle, hind 

 wings blackish, with long blackish fringe; antennae short, stout, basal joint about 

 as long as head, erect; fore wings moderately short (plainly shorter than in H. 

 boreaUs), hind wings short, narrow (like H. borealis) ; venation similar to H. 

 borealis. Expanse 10 mm. 



Colton, California (Morse). 



Oligoplectriim ainericaiium n. sp.— Head Hnd thorax brown, above 

 on vertex long yellowish hair arising in groups; antennae pale, annulate with 

 brown ; palpi with yellow and black hairs ; legs yellowish, with short yellowish 

 hair and short yellow spurs, 2-2-2; wings gray, with a pale spot at anal angle, 

 and one in tip of first subapical cell, indistinct ones in tips of first and second 

 apical cells, pterostigma darker than elsewhere, rather blackish basad of pale 

 anal spot, hind wings uniform gray; abdomen blackish, with short whitish hairs 

 in rings; antennae rather shorter than wings, stout, basal joint stout, scarcely as 

 long as head; face concave, with a median ridge; palpi of % cylindrical, slender, 

 upcurved and near the face; head rather broad ; fore wings moderately broad, 

 discal cell short, not one-third the length of its pedicel, radius bent suddenly at 

 beginning of pterostigma, cross-veins at base of subapicals very oblique; hind 

 wings about as broad, but much shorter than fore pair, discal cell open, not even 

 narrowed; abdomen short; appendages short, a superior median emarginate 

 plate covering them from above. Expanse 18 mm. 



Franconia, New Hampshire (Mrs. A. T. Slosson). 



Silo cinereus n. sp.— Head brown, with long black and white hair, not 

 very dense; palpi slender, dark, with a few white hairs; basal joint of antennae 

 dark, with long white and a few black hairs, beyond pale, very distinctly annu- 

 late with brown , thorax black, with some gray hair ; abdomen brown ; legs yel- 

 lowish, anterior femora rather darker in the middle; wings gray hyaline, 

 scantily clothed with short yellowish and gray hairs, a dark dot in base of third 

 apical cell. Spurs 2-4-4, subapical pairs of intermediate and hind legs beyond 



