266 SYRPHID.^. 



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

 interrupted arched yelloto bands ; tip and hind borders of the segments 

 yellow. 



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



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

 turn, Pz. ! fu. ii. 10. — fasciolatum, Fin. — fig. Hrs. xv. 15. Abdomine 

 nigra, fasciis flavis 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 tcith 

 four interrupted slightly arched yellow bands which are connected on each 

 side with four entire yelloto bands, these are successively wider torcards the 

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



Rare. 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. 



Antennce conjunctim capitis latitudine non breviores, articulo quarto 

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

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

 junctis. 



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

 stoiua oblong, straitened in front, inclined upwards. Labrum nari'ower 

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

 bare, somewhat ciu'ved, almost as long as the palpi. Palpi clavate, 

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

 porrect, h-]omie&, jointly as long as the breadth of the head, seated on a 

 petiole in the fore fi'ont ; 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 veiy 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 i)i 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. 



