LIST OF DIPTERA. 17 



Chironomus hilaris, n. s., mas. PallidS Jlavus, thorace fulvo flavo 

 trivittato, antennis fuhris, pedibus fuscis, femoribus basi albis, 

 mesotibiis Jlavis, alis albis fusco fasciatis. 



Body straw-colour : head and chest tawny, the latter produced 

 in front, and having its usual three stripes of a yellow colour: 

 feelers tawny : eyes black : legs brown ; thighs white towards the 

 base : middle shanks pale yellow, excepting the base and the tips : 

 wings white, each having abroad irregular brown band across its 

 disk; veins yellow ; poisers pale yellow. Length of the body If 

 line ; of the wings 3 lines. 



Chironomus albistria, n. s., mas. Rufo-fuscus, thoracis vittis rufis 

 et canis, scutello rufo, abdomine nigro-fusco, antennis fuscis, 

 pedibus fulvis hirtis, alis albidis. 



Body reddish brown : stripes on chest red or flesh colour ; side 

 stripes passing into two broad white stripes : sides of chest hoary; 

 scutcheon pale red : abdomen dark brown, hairy : sutures of the 

 segments paler : feelers pale brown : legs pale tawny, hairy ; tips 

 of thighs, of shanks, and of feet, darker : wings whitish, not hairy ; 

 veins pale yellow ; poisers white. Length of the body 3 lines ; of 

 the wings 4~ lines. 



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

 G. Barnston, Esq. 



b. Poisers dark. 



Chironomus stercorarius, Meig. Dipt. i. 46, 57. Macq. Hist. Nat. 



Dipt. i. 58, 52. Zett. Ins. Lapp. 815, 33. Gim. Bull. Soc. Imp. 



Nat. Mosc: 1845, iii. 321, 44. C. chiopterus, Meig. Klass. 



Zweif. Ins. i. Aufl. 17, 18. Tipula stercoraria, Deg. Ins. vi. 

 < 149, 22, t. 22, /. 14—20, t. 23, /. 1. Schranh Faun. Boic. iii. 



2319. 

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



Chironomus byssinus, Meig. Dipt. i. 46, 58. Macq. Hist. Nat. Dipt. 



i. 58, 54. Zett. Ins. Lapp. 815, 33. Gim. Bull. Soc. Imp. Nat. 



Mosc. 1845, iii. 321, 45. Tipula byssina, Schrank. Faun. Boic. 



iii. 2330. 

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



Chironomus aterrimus, Meig. Dipt. i. 47, 59. Bull. Soc. Imp. Nat. 



Mosc. 1845, iii. 321, 46. 

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



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