LIST OF DIPTERA. 553 



Syritta Bulbus, n. s. Flavo-albida, thoracis disco nigro, antennis 

 pedibusque fiavis, femoribus posticis apice tibiisque posticis basi 

 fuscis, alis limpidis. 



Head whitish : mouth black, brown towards the tip : feelers 

 yellow, bristle black: eyes coppery ; facets very small, except in the 

 fore part, where they are large : chest black, yellow on each side in 

 front : breast yellowish white : abdomen wanting : legs yellow ; 

 hips and hind shanks towards the base, and tips of hind thighs 

 brown : wings colourless ; wing-ribs and poisers tawny ; veins 

 black. Length of the body 2J lines ; of the wings 4 lines. 



a. Sierra Leone. Presented by the Eev. D. F. Morgan. 



Syritta decora, n. s., fem. Nigra, fulvo-varia, thor ace fusco, anten- 

 nis ferrugineis piceo vittatis, pedibus ferrugineis, femoribus pos- 

 ticis nigro-ceneis, tibiis posticis piceis, alis fusco fulvis. 



Head black, covered with tawny down, tawny about the mouth, 

 which is pitchy : eyes convex, red, slightly bronzed ; all the facets 

 very small : feelers ferruginous, with a pitchy streak along the up- 

 per side ; bristle black : chest rich brown, adorned on each side with 

 three tawny bands, which extend to the breast and there become 

 white ; behind them and before the scutcheon there is a tawny band 

 across the back : abdomen black, linear, a little narrower and much 

 longer than the chest, adorned on each side with three tawny spots ; 

 first pair of spots very large ; second pair of moderate size ; third 

 pair very small ; borders of the segments shining : legs ferruginous ; 

 hips black ; feet brown ; claws and foot-cushions tawny ; tips of 

 claws black ; hind thighs thick, brassy black, armed beneath with 

 teeth; hind shanks curved, pitchy, each adorned with a broad fer- 

 ruginous band : wings brownish tawny ; wing-ribs pitchy ; veins 

 black ; poisers yellow. Length of the body 4-J- lines ; of the wings 

 8 lines. 



Xylota, Meigen. 



Xylota femorata, Meig. Dipt. in. 216, 6. Zett. Ins. Lapp. 586, 7. 

 Musca femorata, Linn. Syst. Nat. ii. 998. Faun. Suec. 1824. 

 Gmel. Ed. Syst. Nat. v. 2877, 58. Turt. iii. 645. Milesia 

 femorata, Fall. Syrph. 11, 8. 



a. ? From Mr. Children's collection. 



b. ? 



Xylota haematodes, Say, Amer. Ent. pi. 8. Wied. Auss. Zweif. 

 ii. 99, 3. Macq. Dipt. Exot. ii. 73, 1, pi 13, /. 4. Milesia 

 haematodes, Fabr. Syst. Anil. 193, 21. 



a. Nova Scotia. Presented by the Entomological Club. 



b. Georgia. From Lieut. Redman's collection. 



