LIST OF DIPTERA. 615 



Eeistalis haesitans, n, si, fem. Nigro-fuscus, scutello ferrugineo, 

 abdominis lateribus basi segmenti secundi margine postico ven- 

 treque fulvis, antennis piceis, pedibus nigris, tibiis basi albidis, 

 tar sis intermediis basi fulvis, alis limpidis. 



Head black : clothed with short tawny hairs, pitchy on the 

 crown, and beset on each side with a few short black hairs, bright 

 tawny and clothed with yellow hairs in front, where there is a brown 

 shining spot : mouth black : feelers pitchy, with a ferruginous spot 

 at the base ; bristle tawny : eyes dark pitchy, their facets very 

 small : chest and breast dark brown, clothed with short tawny hairs ; 

 scutcheon ferruginous: abdomen obconical, dark brown, shining, 

 longer and a little broader than the chest, very thinly covered with 

 pale yellow down ; a large tawny angular spot on each side of the 

 base ; hind border of the second segment tawny ; underside mostly 

 tawny : legs black, clothed with pale yellow hairs ; shanks whitish 

 towards the base ; middle feet tawny at the base ; claws and foot- 

 cushions tawny ; tips of claws black : wings colourless ; a small 

 brown spot on the middle of the fore border ; wing-ribs pitchy ; 

 veins black, ferruginous towards the base ; poisers tawny. Length 

 of the body 6 lines ; of the wings 12 lines. 



Eristalis campestris, Meig. Dipt. iii. 387, 5. Macq. Hist. Nat. 



Dipt. i. 505, 12. 

 a. England. 



Eristalis hortorum, Meig. Dipt. iii. 387, 6. 

 a. England. 



Eristalis vulpinus, Megerle, Meig. Dipt. iii. 388, 7. 

 a. England. 



Eeistalis cryptarum, Fabr. Syst. Antl. 235, 11. Meig. Dipt. iii. 

 389, 9. Macq. Hist. Nat. Dipt. i. 505, 13. Syrphus crypta- 

 rum, Fabr. Ent. Syst. iv. 285, 26. 



a. England. 



Eristalis intersistens, n. s. Niger , f route flavo vittis tribus nigris, 

 thorace viridi-ceneo abdominis lateribus fulvis, antennis piceis, 

 femoribus tibiisque nigro-fasciatis, tarsis piceis, alis subfulvis. 



Body black : head clothed with whitish hairs and down, pale 

 yellow, with three black stripes in front : mouth pitchy : feelers 

 pitchy; third joint rather paler: chest and breast brassy green, 

 clothed with tawny hairs : abdomen elliptical, a little longer and 

 broader than the chest, thinly clothed with tawny hairs ; sides irre- 



