LIST OF DIPTERA. 561 



front ; facets all very small : chest yellow, adorned with a black 

 stripe and with two square black spots in front, and with two ob- 

 couical black marks behind ; scutcheon tawny ; breast black, with 

 three yellow spots on each side : abdomen tawny ; fore borders of the 

 segments yellow ; a brown stripe along the back, tapering from the 

 base to the tip, and slightly interrupted on each segment : legs 

 tawny, clothed with short black hairs ; a short spine beneath near 

 the tip of each hind thigh ; a brown band beneath each hind shank: 

 wings slightly gray, tinged with yellow along the fore borders, and 

 having a small pale brown spot near the tip of the fore border ; 

 wing-ribs ferruginous ; veins and poisers tawny. Length of the 

 body 9 — 10 lines; of the wings 17 — 18 lines. 

 a. ? 



Milesia crabroniformis, Fabr. Syst. And. 187, 1. Latr. Gen. 

 Crust, iv. 332. Meig. Dipt.' iii. 227, 1. Macq. Hist. Nat. 

 Dipt. i. 532, 1, pi. 12, /. 9. Syrphus crabroniformis, Fair. 

 Sp. Ins. ii. 430, 44. Ent. Syst. iv. 299, 78. Musca crabroni- 

 formis, Gmel. Ed. Syst. Nat. v. 2873, 355. 



a. — ? From Mr. Children's collection. 



b. Madeira. 



• -Var. ? Fern. Ferruginea, capite fulvo fronte flavo, tho- 



race ferrugineo jiavo vario fuscoque vittato, abdomine fulvo, basi 

 vitta suturisque fuscis, segmentorum marginibus anticis flams, 

 antennis rufis, pedibus ferrugineis, tibiisflavis, metatibiis fulvo 

 fasciatis, atis subcinereis ad costam subfulvis. 



Head tawny, yellow in front : mouth black : feelers pale red ; 

 third joint nearly round ; bristle pitchy, pale red towards the base, 

 about thrice the length of the third joint ; eyes bronzed ; facets 

 small ; those on the fore part of the crown larger : chest ferrugi- 

 nous, yellow in front, clothed with short tawny hairs, adorned with 

 a brown stripe in the middle, with a square brown spot on each side 

 of the front, and with a short tapering stripe on each side behind : 

 front dark brown, yellow in front, and adorned with two yellow spots 

 on each side : abdomen tawny, obconical, as broad as the chest and 

 much longer, dark brown at the base and along the sutures of the 

 segments, and having a narrow, interrupted stripe of the same colour 

 along the back, and a yellow band along the fore border of the seg- 

 ments : under side brownish, yellow on the sides of the fore borders 

 of each segment : legs ferruginous, clothed with black hairs ; 

 shanks yellowish ; a tawny band round each hind shank ; foot- 

 cushions yellow ; tips of claws black : wings slightly gray, with a 

 tawny tinge along the fore borders ; wing-ribs ferruginous ; veins 



3d 3 



