102 THE CANADIAN ENTOMOLOGIST 



organs ,that specimens which might be ohtrusum from general ap- 

 pearance (olive green 9 colouration, white faces, etc.) are anything 

 but riibic undid urn. 

 21-163 Sympetriim riibicimdulum decisum Hagen. 



First appearance, 1916, July 2, 2 9 tenerals; July 4, a 9 ; 

 July 5, 1 cf and 3 9 s — the cf showing red; July 8, "a number," and 

 b\' July 13, common everywhere. Observed in cop., July 16. The 

 main flight of riibicimdulum was practically over by the end of 

 August, but belated individuals to mid-September. 



Yellow-winged 9 s are quite common. I have specimens 

 July 5 to Sept. 10 The colouration varies from light yellow to the 

 brown of a nicotine stain. 

 22-163 Sympetrum scoticum Donovan. 



July 17, first flight of tenerals; July 23, "numbers. " Tenerals 

 still appearing. Aug. 24, (on which date I took a teneral with 

 exuvia) but by this time many of the earlier flight were black adults. 

 Sept. 2, adults flying in hundreds, and continued during month. 

 Last date Oct. 12. 



Scoticum is a very common insect in this district. Ovipositing 

 is performed by rapidly 'dipping the tip of abdomen in shallow 

 water in the reeds. During the operation the male retains hold 

 by appendages and appears to take an intelligent interest — the pair 

 moving in perfect accord from one patch of open water to another. 

 I have never seen ovipositing performed alone. 

 23-166 Leucorrhinia horealis Hagen. 



The first flight of tenerals appeared May 26, and they continued 

 emerging until mid-June, by which time the early insects were 

 adults, and flying in hundreds. By the end of June the numbers had 

 much decreased, but belated individuals dragged well into July — my 

 last record being July 20, 2 9 s. Mr. Horsbrugh took a teneral at 

 Camrose, May 19. Adult males are blood-red, and old females also 

 take a reddish tinge. Mid-June I took at Gaetz Lake an exuvia 

 with teneral, and a number of exuviae without. The nymph was 

 previously unknown. The insect selects an average height of 

 four or five inches from the water to transform, 

 24-166 Leucorrhinia glacialis Hagen 



On July 5, Mr. Horsbrugh took for me at a slough north, 

 across the river, a number of what at first glance appeared to be 



