African PJiIebotomi'c Diptera. 281 



Colour of body (in dried specimens) mouse-grey * ; wings 

 light sepia-coluured, with three large clear spots on costal 

 margin (distal spot close to tip of wing, above end of upper 

 branch of fourth longitudinal vein), and tivo less sharply 

 defined pale spots on hind margin, one ivitliin fork of fijth 

 longitudinal vein, the other in anal angle ; in middle of costal 

 margin is a conspicuous clove-broion elongate blotch, covering 

 distal third of first longitudinal and greater part of third 

 longitudinal veins, ivhile on basal third of costal margin is an 

 elongate dork blotch of less intensity ; the two distal clear spots 

 are separated by a moderately dark quadrate blotch; head 

 large, prominent , not bent doivn beneath anterior portion of 

 thorax ; tibia vjith a conspicuous pale band at base. 



Head: palpi sepia-coloured; tirst joint of antennce dark 

 brown, flagellum sepia-coloured, clothed Avith pale hairs. 

 Thorax-, dorsum clothed with scattered yellowish hairs. 

 Abdomen clothed with brownish hair. Jt'ings : upper portion 

 of distal extremity, above upper branch of fourth longitu- 

 dinal vein, clothed with scattered and minute black hairs ; 

 third longitudinal vein connected with first longitudinal by 

 a cross-vein, fourth longitudinal vein bifurcating a little 

 before middle of wing. HaUeres straw-yellow, knobs large, 

 elliptical. Legs sepia-coloured, clothed with pale yellowish 

 hairs, tibise with a narrow cream-coloured band at base, hind 

 tibise also with a similar band at tip. 



Ashanti, Southern Nigeria, Congo Free State, Uganda : 

 type and three other specimens from Obuasi, Ashanti, 

 17. xi. 1907, '' caught on the arm of a European " {Dr. W. M. 

 Graham) ; additional material from Forcados, S. Nigeria, 

 May 1908 {G. C. Dudgeon), Cross River, S. Nigeria, 1906 

 {Dr. R. W. Gray), Binza, a small village near Leopoldville, 

 Congo Free State, 13. xii. 1903 {the late Dr. J. E. Dutton 

 and Drs. J. L. Todd and Cuthbert Christy), and Bwamba 

 Country, Semliki Valley, S.-W. Uganda, 2700ft., '' in forest/' 

 1905 {M. T. Dawe). 



This tiny midge, which is evidently very widely distributed 

 in Tropical Africa, would appear to be the African represen- 

 tative of the equally bloodthirsty Culicoides varius, Winn., 

 of Europe ; the wing-markings of the two species are identical, 

 but C. grahamii can at once be distinguished by its much 

 smaller size, paler antennse, and much more conspicuous pale 

 bands on the tibiae : British specimens of C. varius exhibit 

 nothing more than faint indications of pale tibial bands. 



* For names and illustrations of colours, see Kidgway, ' A Nomen- 

 clature of Colors for Naturalists ' (Boston : Little, Brown, and Company, 



1886). • 



