76 Transactions of the Royal Canadian Institute 



dominal segment somewhat triangular. Wing-scales narrow and hair- 

 like, wholly dark. 



Male genitalia with the second uncal plate narrow and strap-like, 

 the Ibbe of the side-piece with three rods, two setae, a filament, a leaf and 

 a seta. 



The larvae occur in artificial receptacles by preference, but are also 

 found in ground pools when soiled by animal refuse. 



This is the common house-mosquito of Europe, introduced by com- 

 merce into various temperate regions. It does not persist in the tropics. 



Distribution: Europe and Asia, from England to Japan; South 

 America, Argentine and Chile; North America, Virginia to Canada on 

 the Atlantic, and California to British Columbia on the Pacific. 



Canadian Records. 



Jordan, Ontario, July i8, 1919 (Wl A. Rose). 

 Stoney Creek, Ontario, A^igust 17, 19 17 (E. Hearle). 

 Guelph, Ontario, November 29, 19 19 (E. Hearle). 

 Vancouver, British Columbia, September, 19 19 (E. Hearle). 



CuLEX (Neoculex) testaceus van der Wpilp.* 



Culex testaceus van der Wjulp, Tidsch. vo,or Ent., (2), x, 128, 1867. 

 Culex apicalis Adams, Karss. Univ. Sci. Bull., ii, 26, 1903. 

 Culex saxatilis Grossbeck, Can. Ent., xxxvii, 360, 1905. 

 Culex frickii Ludlow, Qan. Ent., xxxviii, 132, 1906. 



A small blackish mosquito, readily distinguished by the white 

 abdominal bands being apical on the segments instead of bapal, though 

 sometimes very narrow. Mesonotum with bronzy brown scales and 

 sometimes a pair of light spots n,ear the middle. Proboscis and legs 

 blackish scaled, the femora whitish beneath. Win^-scales niarrow and 

 hair-like, wholly dark. 



The male genitalia lack the second uncal plate, the third pair united 

 by a bridge in a characteristic manner. Lobe of the side piece with two 

 capitate rods, three flattened setae and three normal setae. 



The larvae occur in grassy marshes, and can be found all summer. 



The adults do not bite warm-blooded animals, but have been ob- 

 served attacking frogs. 



Distribution: North Afmerica, from Mexico to Canada. 



* This species was for a long time called Culex territans; but that name has lately 

 been shown to belong to a preceding species, formerly known as Culex restuans. 



