LIST OF DIPTERA. 239 



spot ; tip of the wing colourless, with the exception of two brown 

 spots ; veins black ; poisers piceous, with tawny tips. Length e of 

 the body 6 lines ; of the wings 16 lines. 



Anthrax Mara, n. s. Div. I. Wied., mas. Fusco-nigra, abdomine 

 cinereo-nigro, antennis pedibusque nigris, alls limpidis, basi costa 

 fasciaque nigris. 



Body narrow, dull black, with a slight brown tinge, and clothed 

 with very few hairs : feelers and mouth black : eyes piceous : abdo- 

 men with a slight gray tinge : legs black : wings colourless, rather 

 long, black at the base, and irregularly along the fore borders for 

 full half the breadth unto two-thirds of the length, where the black 

 part ends in a broad band ; wing-ribs, veins, and poisers black. 

 Length of the body 5 lines ; of the wings 16 lines. 



a. Congo. Presented by Sir J. Eichardson. 



Anthrax erythrocephala, Fabr. Syst. Anil. 118, 4. Wied. Dipt. 



Exot. i. 120, 3. Auss. Zweif. i. 255, 5. Div. 1. Stomoxys 



morio, Fabr. Ent. Syst. iv. 393, 1. Syst. Ant!. 279, 1. Exo- 



prosopa erythrocephala, Macq. Dipt. Exot. ii. 1, 37, 5, pi. 16, 



/.4;jrf.l?,/.-0» 



Var. 1. Spot towards the base of the wing rather large. 



Var. 2. Spot towards the base of the wing very small. 



Var. 3. Band of the wing composed of four spots, the hinder- 

 most of moderate size. 



Var. 4. Band of the wing composed of four spots, the hinder- 

 most very small. 



Var. 5. Band of the wing composed of three spots, the hinder- 

 most wanting. 



Var. 6. The foremost spot of the band of moderate size. 



Var. 7. The foremost spot of the band extremely small. 



Var. 8. The two middle spots of the band very large, the fore- 

 most spot subdivided, and seated much nearer the tip of the wing 

 than in other varieties. 



The transverse vein at the end of the first submarginal cell is 

 more angular in this species and in A. Mara than in the preceding 

 species. 



a. Brazil. Presented by Mrs. J. P. G. Smith. 



b. Para. Presented by Reginald Graham, Esq. 



c. Brazil. From Mrs. Noel's collection. 



d. Venezuela. From Mr. Dyson's collection. 



e. Brazil. From Mr. Mornay's collection. 



/. South America. From Mr. Warwick's collection. 



