LIST OF DIPTERA. 19 



Chironomus albidus, Wied. Meig. Dipt. i. 51, 71. 

 a. England. From Mr. Walker's collection. 



Chironomus aestivus, Curt. Brit. Ent. 90. C. birtipes, Macq. Hist. 



Nat. Dipt. i. 59, 57. Meig. Dipt. vii. 11, 10. 

 a. England. From Mr. Walker's collection. 



Chironomus unicolor, n. s., fem. Luteus hirtus, antennis flavis, 

 pedibus pallide flavis, hirsutissimis, alls limpidis pilosis cili- 

 atis. 



Body hairy, saffron or pale orange colour : feelers yellow : eyes 

 black : legs pale yellow, very hairy : wings colourless, hairy, fringed ; 

 veins yellow ; poisers pale yellow. Length of the body 2J lines ; of 

 the wings 4f lines. 



a. Nova Scotia. From Lieut. Redman's collection. 

 Allied to C. cestivus. 



Chironomus lasiomerus, n. s., mas. Viridis, capite thoracisque 

 vittis luteis, thorace producto, abdomine flavo ciliato, pedibus 

 flavis hirtis, alis albis. 



Head orange : feelers very downy ; their hairs yellow : chest 

 green ; the usual three stripes orange-coloured : abdomen yellow, 

 thickly fringed with hairs along each side : legs yellow, hairy, espe- 

 cially the feet and the tips of the shanks of the fore legs : wings 

 white ; veins pale yellow ; poisers yellowish white. Length of the 

 body 4i lines ; of the wings 6 lines. 



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

 G. Barnston, Esq. 



This species has the chest produced in front, like that of C. 

 cestivus, to which it is nearly allied. 



Chironomus festivus, Say, Journ. Acad. Phil. iii. 13, 2. Wied. 



Anal. Ent. 10. Auss. Zweif. i. 16, 5. 

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



G. Barnston. Esq. 



Chironomus lasiopus, n. s., fem. Flavus, thorace fusco trivittato, 

 metathorace nigro, abdomine fusco segmentis flavo cinctis, pedi- 

 bus flavis, tarsis fuscis, alis limpidis subpunctatis. 



Head and chest yellow ; the three usual stripes on the latter 

 brown, confluent, and occupying the whole of the back : feelers 

 brown : scutcheon dingy yellow : hind chest black : abdomen brown, 

 with a broad dingy yellow band on the hind border of each segment : 

 legs clothed with short hairs ; thighs yellow ; shanks darker ; feet 



