io6 Transactions of the Royal Canadian Institute 



species, with the other two mentioned, is common through the northern 

 forests; but it is not possible to determine one from the other by the 

 females alone, which makes exact records scarce. 



Distribution: Northern forests, from Mississippi to the Rocky- 

 Mountains; Yukon Valley. 



Canj^dian Records. 



Arnprior, Ontario, May — , 1917 (C. Macnafnara). 

 Oxbow, Saskatchewan, June 7, 1907 (F. Kniab). 

 Edmonton, Alberta, May 14, 19 19 (H. G. Dyar). 

 Dawson, Yukon Territory, July 16, 1919 (H. G. Dyar). 



Aedes (Heteronycha) cantator Coquillett. 



Culex cantator Cbquillett, Can. Ent., xxxv, 255, 1903. 



A medium sized brown mosquito, with very small tarsal rings. 

 Mesonotum reddish brown, a little gray over the aiutescutellar space 

 median and posterior-lateral bands faintly darker. Abdomen bla^ck, with 

 dull white basal segmental banjis, excavated cen|;rally, the scales also 

 somewhat diffused and occupying most of the last segment dorsally; 

 venter whitish, with median blalck spots. Legs blackish brown, the 

 femora white below; tarsi with very narrow white rings at the bases of 

 the joints. Wing-scales wholly blackish. 



Very much like veitans in colouration, but wholly unrelated thereto. 

 The colouration of the abdomen furnishes the best differentiation. 



The winter is passed in the egg state, the larvae developing in salt- 

 marsh pools along the Atlantic littoral, several generations succeeding 

 each other, according ajs the pools are filled by exceptionally high tides 

 or rains. The females travel some miles inland, and become annoying 

 far from their breeding-places. The mating habits of the males have not 

 been described. 



Distribution: Atlantic coast from New Jersey to Maine, probably in 

 New Brunswick and Nova Scotia. 



Canadian Records. 

 None. 



Aedes (Heteronycha) fletcheri Coquillett. 



Culex fletcheri Coquillett, Proc. U.S. Nat. Mus., xxv, 84, 1902. 



A la*rge yellowish mosquito. Mesonotum dark yellow on the sides, a 

 broad brown median band, contiguous to faint short posterior lateral 

 stripes. Abdomen largely or wholly overspread with yellow scales, some- 



