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Geuus OPOMYZA, Fallen. 



Opomyza lixeata. 



Testacea, ferrugineo trivittatus ; antenna ni<jrce, basi fulva ; abdomen 

 sublineare, thorace longius ; alee sublimpida. 



Testaceous : crown with tliree ferruginous stripes : mouth pitchy : 

 feelers black, tawny at the base ; third joint oblong, more than twice the 

 length of the second ; sixth slender, bare, more than twice the length of 

 the third : chest with three ferruginous stripes: abdomen almost linear, 

 longer than the chest : wings almost colourless ; veins tawny ; lower cross- 

 vein almost straight, slightly oblique. Length of the body If line; of 

 the wings 3 lines. 



Van Dieman's Land. 



Genus GYMNOPA, Fallen. 



GVMNOPA NIGRO^NEA. 



jEnea ; antenna nigra: ; abdomen cnpreum ; pedes nigri ; al<e limpidte. 



Brassy : feelers black : abdomen coppery, obconical, a little longer 

 than the chest: legs black: wings colourless; veins black, tawny at the 

 base; lower cross-vein long, straight, oblique, remote from the border. 

 Length of the body 1 i line ; of the wings 3 lines. 



United States. 



Gymnopa tarsalis. 



Nigro-ccnea ; antenna fulva ; abdomen ceneo-viride ; pedes nigri, tibiis 

 apice genubus tarsisque jlavis ; ala subfulva. 



Brassy black : feelers tawny ; third joint conical, about twice the 

 length of the second ; sixth black, slender, feathered with a few long hairs, 

 more than twice the length of the third : abdomen brassy green, obconical, 

 a little longer than the chest: legs black: knees, feet, and tips of the 



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