296 



SYRPHIDjE. 



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

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

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

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

 hind tibiaB tawny at the base. Var. ft. 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. mellinus var., 

 Fin. ^Eneus, antennis fulvis aut piceis, alis subcinereis, abdomine 

 nicjro maculis bis quatuor subtrigonis fulvis, pedibus fulvis, tibiis tar- 

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



2lneous. Antennas tawny or piceous. Wings slightly grey ; stigma 

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

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

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

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



Generally distributed. (E. S. I.) 



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

 subtus ferrugineo, alis limpidis, abdomine maculis sex subguadratis vix 

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



./Eneous-green. Antennas 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. 



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

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

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

 Baccha p., St. F. et Srv. 



Frons Items, convexa. Epistoma vix elongatum, ad os prominens. 

 Antennae capitis latitudine conjunction breviores, basi disjunct^ ; arti- 

 culus quartus dorsalis ; quinius pubescens. Thoracis latera Jlavo- 

 maculata. Ala areolis discali et subapicali margine posteriore fere 

 cequaliter remotis et parallelis, areola subapicali Integra, lobo axillari 

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

 versa prcebrachiali ante areola discalis medium locata. Abdomine 

 segmentis 5 (pel 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. 



