INSECUTOR INSCITI^ MENSTRUUS 19 



Aedes pionips, new species. 



Similar to lasarensis F. & Y., but larger and more heavily 

 marked. The mesonotum is light yellow scaled, the two me- 

 dian stripes broad, dark brown, contiguous and running back 

 close to the posterior lateral stripes ; legs black, knee-spots 

 white; abdominal bands incised or broken on the dorsal line; 

 wing-scales black ; head yellow-scaled with a large black patch 

 on each side. 



Types, male and female, No. 21922, U. S. Nat. Mus. ; White 

 River, Ontario, June 19 and 21, 1918. A cotype has been de- 

 posited at Ottawa in the Entomological Branch, Department 

 of Agriculture, Canada. 



Males were seen swarming at Prince Albert, Saskatchewan. 

 They appear after sunset when it is becoming distinctly dark, 

 flying high in openings in the forest. They were over an over- 

 grown road between dwarf spruces in a swamp and there was 

 also a small swarm of Acdcs canadensis present. The period 

 of flight does not seem to last over half an hour. 



Larvae occurred in small mossy pools in a spruce swamp. 

 They are large, dark colored fellows ; head hairs in fives ; other 

 characters essentially as in laaarcnsis, but more pronounced. 



Eggs were obtained from captive females at Red Deer. It 

 is elliptical-fusiform, flattened on one side, the micropylar end 

 sharply tapered, black, shining, very finely reticular-granular. 

 The eggs are long and narrow and of good size. They are de- 

 posited singly, as usual in Aedes. 



One hundred and fifty -two specimens were taken as follows: 

 White River, Ontario, June 17-25, 1918; Nipigon, Ontario, 

 June 26, 1918; Prince Albert, Saskatchewan, August 14-18, 

 1918; Red Deer, Alberta, July 30-August 3, 1918; Lochearn, 

 Alberta, August 5-7, 1918; Lamoral, Alberta, August r>, 1918: 

 Lake Louise, Alberta, July 11-17, 1918. 



Besides the above, a single female was taken by Mr. Knab 

 at White River, Ontario, June 24, 1 907 ; another, Kenogami 

 River, Ontario, June 30, 1903 (W. J. Wilson). One specimen, 

 taken by Mr. Awrey on Albany River seems to be this, but I 

 am not sure. The specimen has been returned to Ottawa. 



