330 



THE CANADIAN ENTOMOLOGIST. 



cross-vein, but beyond the lower cross-veins, about six cross veins in the 

 median series, and in the cubital series there are two, rarely three, cross- 

 veins beyond the last of the median series ; in the hind wings the radial 

 sector forks as in the fore wings, and there are five cross-veins in an 

 irregular transverse row. The apical claw-like joint of the male claspers 

 is jet black ; before them there is an erect, slightly curved median tooth. 

 (Figs. i8, 19.) 



Fig. 18. — Ventral view of male 

 genitalia, Leuctra occiJentalis. 



Fig. 19. — Side view of male g'eni- 

 talia, L. occiden talis. 



Expanse, 12-14 nww. 



From Laggan, Alta., 23rd August; Ainsworth, iith July (Currie) ; 

 Bear Lake, 29th July (Currie). 



Leuctra augustus, n. sp. — Black ; head with some short, fine white 

 hairs ; antennas brownish-black ; abdomen, beyond base, rather reddish ; 

 legs yellowish-brown, hind femora darker towards tip ; wings rather 

 fumose, venation yellowish-brown. Pronotum fully twice as long as broad, 

 slightly rugose each side, a median depressed area with a central ridge ; 

 abdomen slender ; legs very long, especially the hind pair, being plainly 

 longer than the entire body Wings very slender, reaching fully one-half 

 their length beyond the tip of the abdomen, the radial sector forks beyond 

 the lower cross-vein, and before the upper one, about six cross-veins in 

 the median series, and in the cubital series there are three or even four 

 cross-veins beyond the last of the median series. 



Expanse, 18 mm. 



From Port Renfrew, loth August. 



