DIPTERA. 411 



longer than the chest, tawny at the base: wings pale gray, slightly tawny 

 along the fore border ; veins black, tawny at the base : halteres tawny with 

 ferruginous knobs. Length of the body H line ; of the wings 3 lines. 

 United States. 



Drosophila linearis. 



Fulva, sublinearis ; abdomen apice piceum ; pedes testacei ; alcefulva:. 



Tawny, almost linear : abdomen longer than the chest, pitchy towards 

 the tip : legs testaceous : wings tawny ; veins pitchy, tawny at the base : 

 halteres testaceous. Length of the body 1 line ; of the wings 2 lines. 



United States. 



Drosohhila brevis. 



Picea ; anlennce ferruginea ; pectus ferrugineum ; ahdomen scgrnen- 

 torum marginibus posticis ventreque Jlavis ; pedes fulvi ; alw stibci- 

 nerea. 



Pitchy: feelers ferruginous ; third Joint nearly round, hardly longer 

 than the second ; sixth joint black, beset on each side with very few long 

 bristles : breast ferruginous : abdomen obconical, a little longer than the 

 chest; hind borders of the segments and under side yellow: legs tawny: 

 wings slightly gray ; veins ferruginous : halteres yellow. Length of the 

 body 1 line ; of the wings 2\ lines. 



United States. 



DuOSOPHILA DECEM GUTTATA, Foem. 



Ferruginca ; abdomen piceum, basi ferrugineum, thorace anguslius et 

 multo longius; pedes testacei; alee fuscce, albo maculalec. 



Ferruginous • abdomen pitchy, almost spindle-shaped, ferruginous at 

 the base, naiTowcr and much longer than the chcht : legs teiitaccous : wings 

 dark brown, adorned with four white spots, and nearer the base with three 

 white dots and with a white streak on the fore border ; veins black, ferru- 

 ginous at the base : halteres white. Length of the body 1 J line; of the 

 wings 2| lines. 



United States. 



