LIST OF DIPTERA. 383 



Mas. AlcE nigro-fuscce, apice hyalina. 

 Dioctria auiifrons, Gurll. ; Meig. Ziceifl. ii. 252, 23. 



Fcem. AlcE fere limpidce, margine antico Jlavicantes. 



Dioctria flavipennis, Meig. Zweifi. ii. 252, 22. 

 Austria. 



9. DiOCTKIA RUFIPES. 



Nigra ; tuherculus frontalis permagnus ; thorax cano bivittatus, 

 lateribus fiavo-alho notatis ; antennarum articulus \us '2o 

 duplo longior ; pedes nifi, tarsorum articulis apice pedibusque 

 posticis nigris ; alee subhyalinm. 



Asilus rufipes, Deg. 



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



g, h. Interlacken, Switzerland. Presented by F. Walker, Esq. 



10. Dioctria Wiedejianni. 



Nigra; fades fulva ; thoracis discus cinereus, nigra lineatus ; alee 

 fuscancE ; pedes testacei. 



Dioctria Wiedemanui, 3Ieig. Zweifi. ii. 241, 2. 



South France. 



11. Dioctria FLAVipES. 



Nigra ; fades nivca ; thorax cinereo trivitlatus ; abdomen segmen- 

 tis apice fulvis, maris 3o et 4o basi fulvis ; pedes flavi, 

 femoribus posticis seepissime litura sublineari nigra superius 

 signatis, tibiis posticis nonnunquam nigris, tarsis fulvis aut 

 nigris ; alee limpidce. 



Dioctria flavipes, Meig. Zett. Dipt. Scand. viii. 2974. 



Var. Abdomen fasciis duabiis ferritgineis. 



Dioctria cingulata, Zett. Dipt. Scand. viii. 2975. 



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



e. Interlacken, Switzerland. Presented by F. Walker. Esq. 



2l3 



