232 Mr. F. Walker's Characters of undescribed Dipfera 



Sub-fam. 8. Geomyzides. 



Silha, Macq. ; Antennarum articulus 3"' 2° plus quadruple 

 longior. 



Piophila, Fall. ; Antennarum articulus 3"* brevis. 



Genus Drosopiiila, Fall. 



Drosophila valida. 



Fcem. — Pallide fnlva, facie nigro-gutlata, pectore vittis quatuor 



fuscesceiitibus, abdomine e maculis nigricaiitibus trivittato, 



pedibus testaceis, alis subcinereis, venis halteribusque testa- 



ceis, vend costali nigrd. 



Female. — Pale tawny, with black bristles; face with a black 



dot by the epistoma ; pectus with two pale brown stripes on each 



side ; abdomen with three rows of irregular blackish spots ; legs 



testaceous ; wings slightly greyish j veins testaceous ; costal vein 



black ; halteres pale testaceous. 



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

 United States. 



Sub-fam. 9. Phytomyzides. 



Genus Agromyza, Fall. 



Agromyza invaria. 



Fcem. — Nigra, nitens, tarsis et tibiis anticis testaceis, alis lim- 



pidis, venis nigris. 

 Female. — Black, shining; tarsi and fore tibiae testaceous; wings 

 limpid ; veins black. 



Length of the body | line ; of the wings Ig lines. 

 United States. 



Genus Phytomyza, Fall. 



Phytomyza solita, 



Mas. — Cinerea, capite luleo-fulvo, gutta verticis antennisque 

 nigris, abdominis segmentis albido-marginatis, genubns testa- 

 ceis, alis subcinereis, venis nigris, haltcribus albidis. 



