LIST OF DIPTERA. 38] 



1. DiOCTEIA (ELANDICA. 



Nigra ; thorax alhido quadrivittatus ; pedes rufi ; tibiis apice 

 tarsisqiie nigris ; alai in utroque sexu <equaHter nigricantes. 



Asilus oelanflicus, Linn. 



a—f. England. From Mr. Stevens' collection. 



2. DiocTRiA Reinhardi. 



Nigra, nitida ; thoracis dorsum lineis duabus angustis cinerascen- 

 tibus postice abbreviatis ; femora tihiceque basi straminea. 



Dioctria Reinhardi, Wied. Meig. Zweijl. ii. 247, 13, pi. 19, f. 19, 

 24. Macq. Dipt. Nord. Asil. 17, 8 ; Hist. Nat. Dipt. i. 291, 

 9. Zeller, Isis, 1840, 40, 5. Loew, Linn. Ent. ii. 412, 2. 

 Zett. Dipt. Scand. viii. 2972. 



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



c. Interlacken, Switzerland. Presented by P\ Walker, Esq. 



3. DiOCTKiA ATRICAPILLA. 



Nigra, parum nitens ; pedes scepissime concolores ; alee dimidialim 

 sed indeterminate in mare atratcB, in foemina fuscescentes. 



Dioctria atricapilla, Meig. 



a — f. England. From Mr. Stephens' collection. 



Var. Nigra ; fades orichalcea ; thorax cinereus, nigra lineatus ; 

 abdomen incisuris albidis ; pedes fulvi, poslici nigri genubus 

 fulvis ; al(B hyalince ; halteres flavi. 



Dioctria geniculata, 3Ieig. 



4. Dioctria Harcyni^. 



Nigra, alis mystaceque in utroque sexu concoloribus ; thorax et 

 abdomen subceerulescentia nitida. 



Dioctria Harcyniae, Loew, Ent. Zeit. Slett. 1844, 381. Linn. Ent. 

 ii. 416, 4. 



Germany. 



2l 2 



