14 INSECUTOR INSCITI^ MENSTRUUS 



impiger and implacabilis Walker. Sixty-nine specimens were 

 taken at Martin Fall, as follows: 



Aedes punctor Kirby, form centrotus H., D. & K. (possibly in- 

 cluding some intrudcns Dyar, though I think not) 53 



Acdes excriicians Walk, (or fitchii F. & Y.) 15 



/-ledes dianta-us H., D. & K. (or small la::arensis V. &. Y.) 2 



69 



The specimens are all females and damaged, so the deter- 

 minations cannot be made positive. 



The same forms were taken along the Albany River at 

 Height of Land, Osnaburg, Fort Hope and Ghost River; but 

 on the shores of James Bay, although punctor persists, fletcheri 

 and curriei appear, indicating comparative absence of forests. 



Typically Canadian Species 

 Aedes punctor Kirby. 



Culex punctor Kirby, Richardson's Fauna Bor. Am., iv, 309, 1837. 

 Culex abserratus Felt & Young, Science, n.s., xx, 312, 1904. 

 Culicelsa auroides Felt, Bull. 79, N. Y. State Mus., 448, 1905. 

 Acdes ccuirofus Howard. Dyar & Knab. Mosq. No. & Cent. Am. 



& W. I., 747, 1917. 

 Aedes provocans Howard, Dyar & Knab (? non Walker), Mosq. 

 No. & Cent. Am. & W. I., 748, 1917. 

 This is the most dominant and widespread species of the 

 Canadian fauna. Its limits are well known in the east, but it 

 extends westward in the Rockies, how far has not been deter- 

 mined. 



The usual form of adult has the mesonotum yellow-scaled, 

 with a single square band of brown scales in the middle. This 

 corresponds exactly with Kirby 's types of punctor as carefully 

 redescribed by Theobald, so that I have no doubt of the iden- 

 tification. The auroides of Felt is the same. The species also 

 varies, giving rise to a form with the mesonotum almost uni- 

 formly brown, on which the names* abserratus and centrotus 

 have been founded. Felt further indicates larval differences 

 between auroides and abserratus; but these are completely 

 bridged in my series from White River, Ontario. The species 

 is distinctly variable both as adult and larva. 



