LIST OF DIPTERA. 



16. DiOCTRIA GRACILIS. 



385 



Nigra, nitens ; fades nrichalcea ; thoracis dorsum nitidum ; pec- 

 toris Intera fascia antcriore Integra; pedes/uhi, tihiis pnsticis 

 tarshqiie nigrn-fiiscis, metatarso postico crassissimo ; alw 

 hyalince, vix subfuscescentes ; halteres Jlam. 



Dioctria gracilis, Meig. Zweifl. ii. 248, 15. Maeq. Dipt. Nord. 



Asil. 18, 9; Hist. Nat. Dipt. i. 291, 10. Loew, Linn. Ent. ii. 



333, 13. 

 South France. North Africa. 



17. Dioctria lateralis. 



Nigra ; fades oriehalcea; antennarum articulus 3ms prcBcedentibus 

 conjunctis mqualis ; thoracis dorsum nitidum ; pectoris latera 

 fascia micante anteriore superius late interrupia ; abdomen 

 basi vix coarctatum, plerumque luteo eingulatum, interdum 

 unicolor ; pedes fulvi, femoribus poslicis nigra cinctis, tibiis 

 tarsisque posticis fuscis ; aUc hyalime ; halteres Jlavi. 



Dioctria lateralis, Meig. Klass. Ziveifl. i. 258, 8 (ex parte) ; Zweiji. 



ii. 11,249, 16. Macq. Dipt. Nord. Asil. 18, 10; Hist. Nat. 



Dipt. i. 291, 11. Loeu', Progr. 1840, 14, 7 ; Isis, 1840, 536, 



7 ; Linn. Ent. ii. 435, 14. 

 Asilus hsEinorrhoidalis, 3Ieig. Klass. Zweiji. i. 270. 

 Dioctria hiemorrhoidalis, Meig. Zweifl. ii. 250, 18. Macq. Dipt. 



Nord. Asil. 19, 13; Hist. Nat. Dipt. i. 292, 13. Zeller, Isis, 



1840,41,6. 



ft, b. England. From Mr. Stephens' collection. 



18. Dioctria longicornis. 



Nigra ; fades aurea ; antennts capite duplo longiores ; articulus 

 3ms pracedentibus conjunctis multo longior ; pedes fulvi, pos- 

 tici nigri ; aim hjalince ; halteres jlavi. 



Dioctria lateralis, Meig. Klass. Zweiji. i. 258, 8 (ex parte). Macq. 

 Dipt. Nord. Asil. 19, 11 ; Hist. Nat. Dipt. \. 291, 12. Loew, 

 Linn. Ent. ii. 437, 16. 



