100 THE CANADIAN ENTOMOLOGIST 



but found A. lineata only. At Blackfalds, Aug. 23,1 took the 

 specimens noted, and saw others (some of which were in cop.) 

 flying o\'er a large muskeg. I incline strongly to the opinion 

 that the true breeding ground of this northern insect is muskeg, 

 which may account for the nymph being still unknown. 



14-114 uEshna itmbrosa E. M. Walker. 



Among my 1915 captures Dr. Walker named one umbrosa — a 

 9 . Unfortunately I failed to record data, though it was certainly 

 taken in the Red River District. I naturally expected to take 

 specimens during the past season, but of the dozens of ^shna 

 netted for examination, not one itmbrosa! New to Alberta list, 

 1915. 



Libellulidae. 



CORDULIIN^. 



15-128 Cordiilia shurtleffi Scudder. 



Tenerals appeared June 6, both d^ and 9 ; June 8, 6 d^s and 

 6 9 s; June 11, numbers flying; June 17-24, a few still on the wing; 

 July 1, a 9 ; July 5, a cf and a 9 . 



This handsome dragonfly appears to have a very limited 

 season. Practically all the specimens were taken in the sun-lit 

 glades northeast of Gaetz Lake, and I took exuviae in the reeds. 

 New to Alberta list. 



16-129 Somatochlora hudsonica Hagen.* 



I took this insect at one place only, and for a very limited 

 period, viz.. flying over a small "run" of still water behind Allen's 

 house, at north end of Gaetz Lake. July 1, 4 d^s and 1 9 ; July 2, 

 1 d^ ; July 8, Id^ ; July 9 saw several and took a d^. 



The males never appeared to rest, but the only 9 taken was 

 while temporarily at rest on a low bush. I conclude the insects 

 were bred in the "run" over which they flew, but when first ob- 

 served they were adult. Next June I should be able to obtain the 

 nymph, which is at present unknown. 



*I sent drawings of the male abdominal appendages of one of this series to 

 Mr. C. H. Kennedy', who wrote me that it was the same as the S. hudsonica in 

 the Hagen collection, M. C. Z., Cambridge, Mass. This is not the species 

 figured by Martin as hudsonica in Cat. Coll. Selys, XVII, p. 27. — E. M. Walker. 



