banks: new neuropteroid insects. 21 



J. Grinnell; Fish Creek, San Bernardino Mts., 20 June. J. Grinnell; 

 Tanquitz Valley, 19 July. F. Grinnell; N. Mex.: Ft. Wingate, 21 

 Aug. J. Woodgate; Utah: Stockton, 22 July. T. Spaulding; 

 Colo.: South Park, 20 Aug., E. J. Oslar. Nine specimens. 



Colored and marked as in H. Occident alls, but the apical part of the 

 silvery stripe has the sides more nearly parallel, not narrowed at tip, 

 and this stripe is more strongly margined than usual in //. occidentalis. 

 All the specimens are larger than H. occidentalis. It is at once sepa- 

 rated in that the superior appendages of the male are excised on outer 

 edge, with the lower part prolonged; and in the female by having the 

 superior appendages much broader and broadly rounded at tip (c/. 

 Plate 1, fig. 9, 15). 



Expanse 45 to 50 mm. 



Rhyacophilidae. 

 Rhyacophila alberta, sp. nov. 



Tyve.~M. C. Z. 10,073. Alberta: Banff, 27 September. N. B. 

 Sanson. One specimen. 



cf Brown, clothed with black hair on face, yellowish on vertex and 

 pronotum, tufts of black hair at base of wings; antennae brown, 

 narrowly yellow at tips of the joints; abdomen beneath and genitalia 

 yellowish. Legs yellowish, front and mid tibiae dark on basal half, 

 very pale beyond, front and mid tarsi brown. Wings gray, fore wings 

 rather densely marked with blackish spots and streaks, and with 

 many pale, mostly rounded spots, some along margin; hind wings 

 with tips of some apical veins darker. Maxillary palpi with second 

 joint extremely long and slender; abdomen with long, sparse, fine, 

 erect, white hairs on upper surface, as long as width of abdomen. 

 Fore wings rather elongate; fork 2 reaches before fork 1, fork 4 as 

 long as its pedicel; genitalia similar to R. bipartita, but there is only 

 a minute rounded superior piece visible, and the internal parts are 

 different (Plate 1, fig. 10). 



Expanse 21 mm. 



Hydropsychidae. 



Arctopsyche phryganoides, sp. nov. 



Type.— M. C. Z. 10,074. Alberta: Banff. N. B. Sanson. One 

 specimen. 



Face pale, with black hair, front and vertex black, with yellowish 



