THE CANADIAN ENTOMOLOGIST 103 



L. proxima — which insect we had been taking for the previous ten 

 days. A closer examination of the specimens, however, failed to 

 show any trace of a spot on segment 7, and they were later for- 

 warded " glacialisi'" to Dr. Walker for determination. This 

 diagnosis he has confirmed. 



From my proxima dates I judge the season of the allied species 

 to be almost, if not quite, identical — a point well worth further in- 

 vestigation next year. New to Alberta list. 



25-166 Leucorrhinia hiidsonica Selys. 



Tenerals appeared with L. horealis May 26, and its season is 

 almost identical. By June 17 males are adult and red, and females 

 reddish. The flight wanes in early July — my final records being 

 as follows: July 2. redcT ; July 4, a teneral 9 ; July 5, several pairs 

 in cop.; July 9, saw one; July 13, "none;" July 18, a worn 9 ; July 

 29, a young cf ; Aug. 1, a cT, red and worn. 



In June, hudsonica is very common, but possibly rather less so 

 than horealis, which it closely resembles in everything except size. 

 I took exuviae rather closer to the water than borealis selects. 



26-167 Leucorrhinia intacta Hagen. 



On June 24 I took two young cTs, the twin-spot on segment 7 

 being bright yellow. July 14, a 9 ; July 15, 3 9 s; July 20, a fine 

 adult 9 . 



The above were my total captives. So intacta is clearly not 

 common — in fact rather rare. It is also the latest of the genus to 

 appear, being a month behind borealis and hudsonica and a week 

 behind proxima (and glacialis?). From my dates it is obvious that 

 for several weeks — say June 24 to 3rd week July — all five Leucor- 

 rhinia are on the wing together. One of the 9 s taken on July 15, 

 has wings "heavily clouded with dirty brown. New to Alberta list. 



27-167 Leucorrhinia proxima Calvert. 



First appearance June 17 when I took a teneral with exuvia, 

 and another, a cf , next day. June 24, took 2 d^s, already showing 

 red markings, and a pair in cop., June 25. July 5, several; July 6, 

 1 cf; July 23, 2 old cfs. 



Proxima is far less common than horealis and hiidsonica and 

 appears about three weeks later. The n\'mph was previously un- 

 known. New to Alberta list. 



