DIPTERA. 305 



of the face ferruginous ; facialia without bristles except at the base ; epi- 

 stoma prominent : eyes hairy : mouth ferruginous, partly pitchy ; palpi 

 tawny : feelers red ; third joint pitchy above, rather deep, linear, slightly 

 rounded at the tip, very much longer than the second ; sixth black : abdo- 

 men siightbf purple: legs black: wings slighthj (jray ; veins black; prae- 

 brachial vein foiTniug a right angle at its flexure which emits a short 

 stump beyond it, much curved inward from thence to its lip : alulae dingy 

 white: halteres tawny with pale knobs. Length of the body 3^ lines ; of 

 the wings 7 lines. 



South America. 



Genus GONIA, Meigen. 



GONIA INDICA. 



Cana, sitbcervina ; captit argenteum ; thorax nigra quinquevittatus ; 

 abdomen testaceum, cano-micans, nigru vittatum ; antennce fulvce, 

 apice iiigrcE ; pedes nigri, tihiis ferrugineis ; alee limpidce. 



Hoary, ivith a slight fawn-colour tinge : head pale buff with a silvery 

 white covering, clothed beneath with white hairs ; stemmatic region pitchy 

 frontalia luteous : mouth pitchy ; palpi pale yellow : antenns tawny 

 third joint from half the length to the tip and following joints black 

 chest with five slender, indistinct and interrupted black stripes : abdomen 

 testaceous, with hoary reflections and with a black middle stnpe : legs black 

 with a hoary tinge ; shanks mostly ferruginous : wings colourless ; veins 

 testaceou.'', pale yellow at the base : alula) white. Length of the body 

 5 lines; of the wings 10 lines. 



East Indies. 



Genus DEXIA, Meigen. 



The species here described may be grouped thus : — 



a. Proboscis short. 



b. Praebrachial vein forming a very slightly acute angle at its Hcxure. 



obscura. 



