258 AMERICAN NEUROPTERA 



golden hair, often with two black dots on the posterior margin, apical fringe 

 wholly golden; hind wings hyaline, fringe pale gray; venation as in T. ignita. 

 Length 10 nun. 



New Brunswick, N. J. (J. B.'Smith); Florida (Mrs. Slosson) 



( >iii- tour species of Triasnodes may he separated by the follow- 

 ing table : 



1. Wings beyond anastomosis distinctly darker than before it ignita. 



Wings unicolorous 2. 



2. Fringe, at posterior apical margin more or less fuscous 3. 



Fringe golden flavescens. 



3. Wings with mostly gray hair grisea. 



Wings with mostly yellow hairs- • • borealis. 



Triwiiodew ignita Walk. 



Specimens have been seen from Washington, D. C. ; Ithaca, N. Y. ; 

 Agric. College, Mich., and New Brunswick, N. J. 



Tria>nodes grisea Banks. 



Specimens all come from Colorado : Denver, Boulder and Clear 

 Creek. 



Hydronsyche otwidentalis n. sp. 



Head densely clothed with short white hair, at each posterior corner is a bunch 

 of longer black hair; antennae yellowish, narrowly annulate with brown, thorax 

 clothed mostly with white hair in the middle, bunches of black on the sides; 

 legs yellowish ; wings brown, densely irrorate with white, a large area just be- 

 yond discal cell, and a large spot at arculus, apical fringe dark brown, with a few 

 white patches ; venation as usual, first apical cell usually shorter than its pedi- 

 cel ; hind wings gray hyaline; on the middle tibiie the median spurs are plainly 

 nearer to base than to tip. 



Length 10 mm. 



Pullman, Washington, August (C. V. Piper). 



Hydropsyche grandis n. sp. 



Head clothed with yellowish hair, and a bunch of black at each posterior cor- 

 ner: antenna yellow, narrowly annulate with brown, clothed above with yellow 

 hair; legs pale yellowish, spurs 2-4-4, the median pair on middle tibia- scarcely 

 nearer to the base than to tip; abdomen fuscous; wings yellowish hyaline, veins 

 dark brown, surface densely irrorate with brown, usually in irregular wavy 

 bands, beyond the anastomosis becoming very dense and occupying most of the 

 surface, venation as in H. scalaris, but the first apical cell is longer, usually 

 longer than its pedicel; hind wings pale gray; in the female the intermediate 

 tibia- and basal joint of tarsus is broad. 



Length 16 mm. 



Southwest Colorado, July (Oslar). 



< )ur largest species of the genus and very prettily marked. 



