SYRPHUS. 291 



Halteres yellow. Ahdomm black, with iJiree half-interrupted hoary 

 bands ; first broad ; second and third narrow. Lerjs tawmj ; femora 

 black at the base ; hind femora black ivith tawny tips ; liind tibiae rarely 

 encircled with black. Fem. Crown with a black stripe. 

 Not rare. (E. S. I.) 



15. laternarius, IMlr. pr. 2040 (1776).— y/r/«ci«.s, Fb. ; Mg.— 

 mutatus, Ztt. Ni(jer, abdomine fasciis una lata ftdca diiabusque cards 

 angustls. Long. 4^-5 ; alar. 10-11 lin. 



Black. Head hoary, yellow in front ; disc of the crown jeneous. 

 Wings pale grey ; veins black ; stigma piceous. Halteres yellow. 

 Abdomen with three interrupted bands ; first taiony, very broad ; second 

 and third hoary, narrow. Legs black. 



Not common. (S. I.) 



16. albostriatus, Fin. syrph. 42. 10 (1816); Mg. ; Mq. ; Lw. ; 



Ztt. ^Eiieus, antennis fulvis apice fuscis, thorace cano-hivittaio, abdo- 

 mine fasciis quatuor interruptisflavis, pedibus flavis, femoribus basi nigris. 

 Long. 4-4i; alar. 8-9 lin. 



Body clothed with tawny hairs. Head yellow. Antennae tawnv, 

 piceous towards the tips. Thorax aeneous, with two hoary stripes. 

 Scutellum ajneous, tawny. Wings colourless, with a blackish-brown 

 stigma. Alulae white. Halteres luteous. Abdomen ivith four inter- 

 rupted yellow bands ; the fourth forming only a small spot on each side ; 

 hind borders of the fourth and fifth segments yellow. Legs yellow ; 

 femora black towards the base ; hind tibiae indistinctly banded with 

 brown ; hind tarsi brown above towards the tips. 



Not rare. (E. S. I.) 



17. venustus, Mg. zw. iii. 299. 38 (1822) ; Mq. ; 7M.— sol it aria, 

 Ztt. Yiridi-aencus, antennis piceis subtus ferrugineis, abdomine nigra 

 fasciis quatuor interruptis pedibusque Inteis, femoribus basi nigris. Long. 



4-5 ; alar. 8-10 lin. 



Head luteous, with a short black stripe above the peristoma ; vertex 

 Eeneous-green. Antennae piceous, ferruginous beneath ; fourth joint 

 feiTuginous. Thorax aeneous-green. Scutellum dull tawny. Wings 

 colourless ; stigma lurid. Alulae yellowish-white. Halteres luteous. 

 Abdomen black, fusiform, adorned with four transverse luteous spots on 

 each side ; hind borders of the fourth and fifth segments luteous ; under 

 side luteous with transverse black spots. Legs luteous ; femora black 

 at the base ; tarsi ferruginous ; hind tarsi piceous. 



Generally distributed. (E.) 



18. lunulatus, Mg.zw.iii. 299. 39 (1822); Mq. ; Ztt. iEneus, 

 epistomate flavo nigro-vittato , antennis fulvis supra fuscis, scutello ceneo- 

 fusco, abdomine nigro-«nco lunulis bis tribus, pedibusque flavis, femoribus 



basi nigris. Long. 4-5 ; alar. 9-12 lin. 



iEueous. Vertex aeneous-black ; epistoma yellow, with a black sea- 



