African PJdehotomic Diptera. 283 



'connecting first and third longitudinal veins, and between 

 third vein and upper branch of fourth ; a large, pale mouse- 

 grey, roughly quadrate blotch in proximal third of wing, 

 extending from costa to fourth longitudinal vein (within 

 limits of this blotch costa and other veins passing through it 

 are darker) ; a similar but narrower blotch in centre of fifth 

 longitudmal vein, with an ill-defined extension into anal 

 angle, and a more or less well-defined, mouse-grey, oval 

 spot on proximal side of lower branch of fifth longitudinal 

 vein : fourth longitudinal vein bifurcating a little before 

 middle of wing. Halteres sepia-coloured, proximal two- 

 thirds of stalks cream-buff. Legs sepia-coloured, clothed 

 with brownish hair; tibiae cream-bufFat extreme base. 



Uganda : type and four other specimens from the vicinitv 

 of the Mianga River, Julv 1903, " biters " {Colonel Sir David 

 Bruce, C.B., R.AM.C, F.R.S.). 



The pattern and difl'use character of the wing-markings 

 will serve to distinguish Culicoides brucei without difficulty 

 from either the foregoing or following species. 



Culicoides milnei, sp. n. 



? . — Length (3 specimens), exclusive of head, 1-5 to 1-6 

 mm. ; length of wing 16 mm. 



Colour of body (in dried specimens) dark brown, with a 

 median grey patch on hinder portion of dorsum of thorax ; 

 head small, in dried specimens bent downwards as in foregoing 

 species ; wings, except basal sixth, ivhich is cream-coloured and 

 semihy aline , sepia-coloured, strongly iridescent, and marked 

 with sharply defined small light spots ; three cream-coloured 

 transversely elongate spots on costa, separated from each other 

 and from base of v)ing by quadrate sejna-coloured blotches, 

 somewhat darker than remainder of icing ; other light spots 

 smaller, more rounded, and milky rather than cream-coloured. 



Head: pcdpi dark brown; first joint of antennce mummy- 

 brown, flagellum Isabella-coloured, clothed with yellowish 

 hair, last five joints darker. Thorax : dorsum sparsely 

 clothed with dark brown or brownish hair. Abdomen 

 clothed with brownish hair. Wings : costal spots as fol- 

 lows : — 1st, starting from costa above base of third longi- 

 tudinal vein, crossing first and base of third longitudinal 

 veins, surrounding anterior transverse vein, and extending 

 to fourth longitudinal vein ; 2nd on costa at point where 

 third longitudinal vein enters it, extending downwards to 

 about three-fourths of distance between costa and upper 



