296 SYBPHIDjE. 



slightly grey ; veins black ; stigma brown. Halteres tawny. Abdo- 

 men black, aeneous at the tip, adorned with four pair of large subquadrate 

 yellow spots, whose hind sides are .sliyhtly oblique ; fourth pair smaller 

 than the others. Legs tawny ; hind legs black ; hind femora and 

 hind tibiae tawny at the base. Tar. /3. Head slightly tawny on each 

 side in front ; first pair of abdominal spots almost triangular ; fourth 

 transverse. Legs piceous. 



Generally distributed. (E. S. I.) 



32. scalaris, Fb. e. s. iv. 108. 312 (1792) ; Pz. ! fn. xlv. 20. 

 gracilis, Mg. zw. iii. 228. 80 (1822) ; LI. ; Mg. ; Ztt.mettinm var., 

 Fin. JEneus, antennis fulvis ant piceis, alis subcinereis, abdomine 

 nigro maculis bis quatvor subtrigonis fulvis, pedibus fulvis, tibiis tar- 

 sisque posticis piceo-cinctis. Long. 3-4 ; alar. 6-8 lin. 



JEneous. Antennae tawny or piceous. Wings slightly grey ; stigma 

 grey. Halteres tawny. Abdomen black, aeneous at the tip, with four 

 pair of tawny spots ; frst pair nearly round ; second and third pair sub- 

 triangular, slightly undulating on the outer side ; fourth pair transverse. 

 Legs tawny ; hind tibiae and hind tarsi with piceous bands. 



Generally distributed. (E. S. I.) 



33. concolor, n. JEneo-viridis, antennis nigris articulo tertio 

 subtus ferrugineo, alis limpidis, abdomine maculis sex subquadratis vix 

 conspicuis cants, pedibus fulvis. Long. 3^ ; alar. 7 lin. 



.ZEneous-green. Antennae black; third joint ferruginous beneath. 

 Wings colourless. Halteres tawny. Abdomen with three large sub- 

 quadrate very indistinct hoary spots on each side. Legs tawny. 



Rare. In the collection of the Entomological Club. (E.) 



Genus XXVII. DOROS. 



Donos, Mg. ; Mq. d. i. 5 (1834) ; Ztt. ; Rdn. Musca p., L. ; Dg. ; 

 Shll. ; Shf. ; Shr. ; Gf. ; Gm. Syrphus p., Fb. ; Pz. ; LI. ; Mg. 

 Mulio p., Fb. Milesia p., Fb. Eristalis p., Fb. Scceva p., Fin. 

 Baccha p., St. F. et Srv. 



From lavis, convexa. Epistoma vix elongatum, ad os prominens. 

 Antenna capitis latitudine conjunctim breviores, basi disjumtce ; arti- 

 culus quartus dorsalis ; quintus pubescens. ITioracis latera Jlavo- 

 maculata. Alfe areolis discali et subapicali margine posteriore fere 

 tiequaliter remotis et parallelis, areola subapicali integra, lobo axillari 

 distincto, venis subcostali et radiali ad marginem disjunctis, vena tram- 

 versa prcebrachiali ante areolce discalis medium locata. Abdomine 

 segmentis 5 (vel 6) tantum conspicuis. 



Head semicircular ; front even, convex ; epistoma but little elon- 

 gated horizontally, a little compressed beneath the antenna, with some 

 slight tubercles above the peristoma, protuberant towards the mouth. 



