284 Oil new African Pldehotomic Diptera. 



branch of fourth lon^itudiual vein (greater part o£ thU 

 spot lies beyond tliird vein, but it also extends into space 

 between tips of third and first longitudinal veins) ; 3rd 

 spot on costa midway between second spot and tip of 

 wing, its lower extremity somewhat closer to upper branch 

 of fourth longitudinal vein than is lower extremity of 

 second spot. Remaining spots as follows : — a group of four 

 in distal fourth of wing, consisting of a pair of spots in 

 middle of lower branch of fourth longitudinal vein (one spot 

 above, the other below the branch, with which they are in 

 contact), and a second pair (in which the spots are also on 

 either side of tlie lower branch of the fourth longitudinal 

 vein, but wider apart) between former pair and margin of 

 wing; a rounded spot on hind margin, in cell enclosed by 

 the branches of the fifth longitudinal vein, nearer upper 

 branch than lower ; two spots below fifth longitudinal vein, 

 one close to vein some distance before it forks, the other on 

 or near hind margin and a little further from base of wing ; 

 near anal angle may be a trace of a third and much smaller 

 spot; lastly, there is a somewhat elongate spot, sometimes 

 fairly large, extending from base of lower branch of fourth 

 to that of upper branch of fifth longitudinal vein. Third 

 longitudinal connected with first longitudinal vein by a cross- 

 vein ; fourth lonyltudinal vein bifurcating in middle of wing ; 

 distal portion of wing sparsely clothed with minute brownish 

 hairs. Halteres : knobs large, scpia-coloured ; stalks and tips 

 of knobs cream buff. Legs sepia-coloured, tarsi, a narrow 

 band at base of tibiae^ and tips of hind tibite cream-buff. 



East Africa Protectorate : tvpe and two other specimens 

 from Nairobi, 5000 ft., 4. v. 1906 {Dr. A. D. Milne). 

 According to the donor this species is prev dent at 

 Nairobi in the rainy season, when it invades bedrooms at 

 night. Writing on Aug. 21, 1906, Dr. Milne stated that 

 these midges abound in the grass on the Athi Plains during 

 the wet weather, and that, so far as he was aware, there was 

 nothing to connect them with any disease of human beings 

 or domestic animals. 



Owing to the pattern of its wing-markings, Culicoides 

 milnei cannot be confused with either of the foregoing 

 species : as affording a further means of distinction, the 

 position of the fork of the fourth longitudinal vein may also 

 be noted. 



