LIST OF DIPTERA. 93 



Lei a unicolor, n. s. Fulva, capite supra rufo-fusco, antennis nigris, 

 pedibus fulvis, femoribus flavis, alis limpidis. 



Body tawny: head reddish brown above: feelers and eyes 

 black ; the former tawny at the base : palpi yellow : hips and thighs 

 yellow ; shanks and feet dull tawny : wings colourless ; veins 

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

 5 lines. 



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

 G. Barnston, Esq. 



Leia varia, n. s. Flava nigro varia, antennis nigris, pedibus flavis, 

 alis fusco unifasciatis. 



Body yellow: head black between the eyes, which, and the 

 feelers, are also black ; the latter are yellow at the base : chest, ex- 

 cept the fore part, black: segments of the abdomen bordered with 

 black, which colour extends partially along the sides of the seg- 

 ments : legs yellow ; hips and thighs much paler than the shanks 

 and the feet: wings colourless, each with a broad, brown, irregular 

 and interrupted band near its tip ; veins brown. Length of the 

 body If line ; of the wings 4 lines. 



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

 G. Barnston, Esq. 



Leia trifasciata, Barnston s MSS. Capite fulvo, thorace flaw fus- 

 co trivittato, abdomine fusco suturis ventreque flavis, antennis 

 fuscis, pedibus flavis, alis fusco trifasciatis. 



Head tawny : eyes black : feelers brown, yellow at the base : 

 palpi yellow : chest yellow, with three brown stripes ; the middle 

 one much in advance of the other two and slightly fissured in front ; 

 the side stripes uniting on the scutcheon : a broad brown stripe on 

 the hind chest : abdomen brown ; the base of each segment and the 

 whole of the under-side yellow : hips and thighs pale yellow ; shanks 

 and feet darker : wings colourless, with three brown bands, which 

 are much interrupted and very irregular, the first about the middle 

 of the wing, the second near the tip, which is occupied by the third ; 

 veins brown ; poisers yellow. Length of the body 2j lines ; of the 

 wings 5 lines. 



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

 G. Barnston, Esq. 



Leia Winthemii, Lehmann, Dissert. 1822, 39. Meig. Dipt. vi. 296, 

 11. Zett. Ins. Lapp. 861, 4. Stag. Kroy. Nat. Tids. iii. 233, 

 2. Mycetophila Winthemi, Macq. Hist. Nat. Dipt. i. 133, 20. 



