MAY FLIES AND MIIXiES OF NEW YORK 245 



LuDdbeck (1898, 272) sajs in regard to this sy>ecies and C. 

 boreal is Cui-tiSj that thev ai-e probably identical with eitliei 

 C. h y p e r b o r e n s or C. s t a e g e r i. He says further tb^ji 

 C. p o 1 a r 1 s of Holmgren is not identical with either of tlie 

 above-named sj>ecies, he having seen the Holmgren specimens. 

 In Holmgr-en's si>ecies the fore metatarsus is shorter than the 

 tibia, while according to the figure given by Curtis in Eoss' Voyage 

 LXXVII, it appears that p o 1 a r i s Kirby is a true C h i r - 

 n o m u s (sens. str.^. Arctic regions. 



65. Chironomus attennatns Walker 



1848 Chironomus Walker. List Dipt Brit Mtis. 1 : 20 

 1878 Chironomus Ost Sack. Cat'l. Dipt N. A. p.20 



Male. Body dark gray, thinly clothed ^ith yellow hairs; abdo- 

 men very long, fringed with hair-s on each side; feelers brown; 

 legs dull yellow, hairy, especially the four hinder thighs and 

 shanks; fore feet very long, hair-y at the base; wings slightly gray, 

 with the usual dark spot on each, and having a fringe of very 

 short hairs; veins brown; j>oisers dark gray. Length of the body 

 3 lines (=^ mm.;; of the wings 5 lines 1=10 mm.;. St Martin's 

 falls, Albany river, Hudson's bay. 



According to the heading of the group to which this species 

 belongs the author states that the wings are hairy. White moun- 

 tains, Xew Hampshire (Slossonj. 



66. CMronomiis crassicollis Walker 



1848 Chironomus Walker. List Dipt. Brit Mus. 1 : 18 

 1878 Chironomus Ost Sack. Caf 1. Dipt N. A. p.20 



Male. Body blackish brown, downy; chest thick: abdomen 

 ujuch narrower than the chest; feelers and legs brown: wings 

 white, not hairy, very iridescent; veins pale yellow; poisers 

 brown. Length of the body one line (=2 mm.) ; of the wings 1.5 

 line (=S mm.). St Martin's falls. Albanv river, Hudson's bav. 

 Walker, loc. <^it. 



67. Chironomns fimbriattis Walker 



1848 Chironomus Walker. List Dipt Brit Mus. 1 : 20 

 1878 Chironomus Ost Sack. Catl. Dipt. N. A. p.20 



Body brown, hairy, abdomen fringed with hairs; feelers and 

 legs pale brown, the latter hairy; wings colorless, hairy, fringed: 

 poisers pale brown. T>ength of the body one half line (=1 mm.) ; 

 of the wings one line (^=2 mm.). St Martin's falls. Albany river, 

 Hudson's bay. Walker, loc. cit. 



