266 SYRPHIDJE. 



tawny along the fore border. Halteres luteous. Abdomen with four 

 interrupted arclied yellow bands ; tip and kind borders of the segments 

 yellow. 



Eare. In Mr. Stephens' s collection. (E.) 



6. marginatum, Mg. zw. iii. 171. 5 (1822); Ztt. ; Lw. arcua- 

 tum, Pz. ! fn. ii. 10. -fasciolatum, Fin. fig. Hrs. xv. 15. Abdomine 

 nigro, fasciis Jlavis alterne interruptis, femoribus basi nigris. Long. 6 ; 

 alar. 12 lin. 



Black. Epistoma yellow on eacli side. Thorax with two short 

 hoary stripes on the fore part, and with a yellow interrupted stripe on 

 each side; scutellum brownish, with a yellow border. Wings pale 

 grey, tawny along the fore border. Halteres luteous. Abdomen w It It- 

 four interrupted slightly arclied yellow bands which are connected on each 

 side with four entire yellow bands, these are successively wider toicards the 

 tip, which is yellow. Legs luteous ; femora black towards the base. 



Eare. In Mr. Stephens' s collection. (E.) 



Genus XVI. PSARUS. 



PSARUS, LI. d. h. n. xxiv. 193. 563 (1804) ; Fb. s. a. ; Mg. ; St. F. et 

 Srv. ; Mq. ; Ahr. ; Lw. ; Edn. Syrphus p., Fb. e. s. Ceria p., Fb. 

 e. s. sppl. Musca p., Gf. 



Antenna conjunctim capitis latitudine non breviores, articulo quarto 

 tertii prope medium inserto, quinto nudo. Alee areola subapicali inte- 

 gra, lobo axillari distincto, venis subcostali et radiali ad marginem dis- 

 junctis. 



Body narrow. Epistoma with a scapula above the peristoma ; peri- 

 stoma oblong, straitened in front, inclined upwards. Labrum narrower 

 towards the tip, which is notched. Lingua acute. MaxillaB subulate, 

 bare, somewhat curved^ almost as long as the palpi. Palpi clavate, 

 bristly above, shorter than the labrum. Labium cylindrical. Antenna 

 porrect, 5 -jointed, jointly as long as the breadth of the head, seated on a 

 petiole in the fore front; first and second joints beset with short 

 bristles ; first cylindrical, hardly thicker at the tip ; second compressed, 

 somewhat widened in front, twice the length of the first, with which it 

 forms an obtuse angle ; third oblong, obtuse, compressed, somewhat 

 shorter than the second ; fourth very short, seated near the middle of 

 the third ; fifth setiform, naked. Thorax almost quadrate, convex ; scu- 

 tellum semicircular. Wings incumbent and parallel in repose ; subapical 

 areolet entire ; axillary lobe distinct ; subcostal and radial veins ending 

 separately in the margin. Halteres almost uncovered. Abdomen 

 long-elliptical, almost linear ; tip obtuse. Male. Front straitened in 

 the middle, narrower than that of the female. Fern. Front of equal 

 breadth. 



