SYRPHUS OBLIQUUS. 



SPECIFIC CHARACTER. 



Thorax green-bronze, with a yellow dot be- 

 fore the wings ; tergum bounded and spotted 

 with yellow. 



SYNONYM. 



SciEVA oBLiQUA. NoMs. Joum. Acad. Nat. Sci- 

 ences, vol. iii. p. 89. 



DESCRIPTION. 



Head yellow, a dusky line above the antennae ; 

 orbits yellow to the vertex ; antennae blackish on 

 the superior edge : thorax dark green-bronze ; a 

 yellow spot before the wings : scutel bright yel- 

 low: feet whitish; anterior tibia and tarsi a 

 little dilated, the latter with short joints ; poste- 

 rior thighs with one obsolete band, their tibia 

 two banded; extremity of all the tarsi dusky: 

 tergum black ; first segment with a yellow basal 

 edge ; second segment with a band at base, inter- 



PLATE XI. 



