20 LIST OF DIPTERA. 



brown : wings colourless, with the usual spot on the disk ; veins 

 brown ; poisers pale yellow. Length of the body 2i lines ; of the 

 wings 4 lines. 



a. St. Martin's Falls, Albany River, Hudson's Bay. Presented by 

 G. Barnston, Esq. 



Chironomus attenuatus, n. s., mas. Griseus,flavo hirtus, abdomine 

 pedibusque anticis longis, antennis fuscis, pedibus flaws hirtis, 

 alis subgriseis. 



Body dark gray, thinly clothed with yellow hairs : abdomen 

 very long, fringed with hairs on each side : feelers brown : legs dull 

 yellow, hairy, especially the four hinder thighs and shanks ; fore 

 feet very long, hairy at the base : wings slightly gray, with the 

 usual dark spot on each, and having a fringe of very short hairs ; 

 veins brown ; poisers dark gray. Length of the body 3 lines ; of 

 the wings 5 lines. 



a. St. Martin's Falls, Albany River, Hudson's Bay. Presented by 

 G. Barnston, Esq. 



Chironomus flavrcingula, n. s., mas. Griseus, thorace albo quadri- 

 maculato, abdominis segmentis albo cinctis, antennis pedibusque 

 nigris, hisflavo cinctis, alis limpidis. 



Body gray, with two large white spots on each side of the chest : 

 abdomen fringed with hairs on each side, and having a white silvery 

 band on the hind border of each segment: feelers black: legs 

 black, hairy ; a yellow ring near the tip of each thigh, and two yel- 

 low rings round each shank ; feet dull yellow towards the base : 

 wings colourless, with the usual dark spot on each ; veins pale 

 brown ; poisers gray. Length of the body 2f lines ; of the wings 

 5 lines. 



a. St. Martin's Falls, Albany River, Hudson's Bay. Presented by 

 G. Barnston, Esq. 



Chironomus fimbriatus, n. s. Fuscus, hirtus, abdomine ciliato, an- 

 tennis pedibusque pallide fuscis, his hirtis, alis limpidis pilosis 

 ciliatis. 



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

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

 poisers pale brown. Length of the body \ line ; of the wings 1 

 line. 



a. St. Martin's Falls, Albany River, Hudson's Bay. Presented by 

 G. Barnston, Esq. 





