18 INSECUTOR INSCITI^ MENSTRUUS 



Aedes curriei Coquillett. 



No extension of range up the coast north of Vancouver 

 Island was observed. The coast is steep and rocky, forming 

 no marshes. 



Total, 1 specimen: Edmonton, Alberta, May 19, 1919. 



Aedes canadensis Theobald. 



Found only in the Fraser Valley near the southern part of 

 the faunal region. It occurs also in the Kootenai region. 



Total, 4 specimens: Prince George, British Columbia, May 

 22, 1919. 



Aedes vexans Meigen. 



Absent from the Canadian Fauna in the west. It occurs in 

 the bottom lands of the Fraser Valley. 



Total, 161 specimens : Prince George, British Columbia. 

 September 7-10, 1919. 



Aedes aestivalis Dyar. 



Occurring in the southern fringe of the Canadian Fauna. 

 I found a nice series in Doctor Hewitt's collection from Sica- 

 mous, and myself took a few specimens in the upper Fraser 

 Valley. 



Total, 2 specimens : Prince George, British Columbia, Sep- 

 tember 7, 10, 1919. 



Also from Doctor Hewitt's collection, Sicamous, British Co- 

 lumbia, July 28, 1916 (C. G. Hewitt). 



Aedes cinereus Meigen. 



Extending throughout the Canadian region, though always 

 rare. The most abundant occurrence was in the Skeena flood- 

 pools, where cinereus was second in importance. In estimat- 

 ing the abundance of cinereus in the Skeena Valley, I use the 

 data from larval emergences. The adults have habits of their 

 own, and in the deep forest, which the other fllood-pool species 

 frequented, cinereus was extremely rare. On the other hand, 

 collecting under a solitary tree amid bushes by the river-bank 

 where the surroundings were light and open, nothing but 

 cinereus came. 



