383 



spot, and is shortened behind towards the first wliere it emits a slender 

 branch to the hind border ; a lurid transverse streak on the union 

 of the bands ; veins black, bordered with dark brown at the base ; lower 

 cross-vein oblique, rather long : halteres pale yellow. Length of the body 

 3^ lines ; of the wings 7 lines. 



S. America. 



Tbypeta albovaria. 



Nigra ; caput testaceum ; antenna fulva ; thorax cano triiittatus ; abdo- 

 men fjisiforme, purpureum ; pedes albidi,nigro varii, tarsis testaccis ; 

 alte nigro-fusccB, vitta fasciisque limpidis. 



Urophora ? Desv. Dull black : head testaceous, whitish beneath and 

 along the sides of the eyes ; crown black with a testaceous disk ; face 

 yelloic, ivith a pitchy spot on each side ; epistoma rather prominent: raouth 

 tawny, partly whitish ; palpi whitish : /<?eZers tawny; third joint conical, 

 much longer th<an the second ; sixth feathered to the tip with rather long 

 hairs,: chest toith three hoary stripes : breast ivith an oblique white stripe on 

 each side extending from the tving to the middle hip; a white spot on each 

 side by the fore-hip : abdomen purple, spindle-shaped, much narrower but 

 hardly longer than the chest ; fore-legs black, mth white hips ; posterior 

 thighs white with black tips ; shanks dingy white with black tips ; feet tes- 

 taceous with black tips : tinngs blackish brown, interruptedly colourless 

 along the hind border from the base to a little beyond the middle ; a 

 colourless stripe extending from the base along the disk to the middle, 

 where it is united to two slightly oblique bands between it and the fore 

 border ; two slightly oblique bands across the wing nearer the tip ; veins 

 black ; lower cross-vein upright, very slightly waved. Length of the body 

 4| lines ; of the wings 1 1 lines. 



Senegal ? 



Trvpeta arcuata. 



Atra, gracilis ; caput argcntco varium ; abdomen dcjn'cssum, attcnuatum ; 

 al(C nigro-fmcw, antice subconvexce, vitta limpida fasciisque duabus 

 albis, venis undulatis. 



Urophora? Desv, Deep black , slender : head silvcry-irhite about the 

 peristoma and on the face at the basaf the feelers ; epistoma not prominent : 



