in the British Museum. 37 



yellowish ; stigma indistinct. Venation : Sc ending before 

 the origin of lis, Sc 2 narrowly seamed with brown, removed 

 a short distance from the tip of Sc 1} the distance between 

 the tip of Sci and the origin of Us about equal to one-half 

 the latter ; Us stongly angulated at origin, shorter than 

 I£ 2 +s'> cell i? 2 moderately large for a member of this group, 

 vein i? 2 slightly oblique ; cell Is/ Mo usually closed, rarely 

 open by the atrophy of the outer deflection of M s ; basal 

 deflection of Cu v before the fork of M, the fusion of these 

 two veins about to r-m or a little shorter. In the paratype, 

 Rs is square at its origin and strongly spurred and Sci ends 

 almost opposite this origin ; in all other characters the two 

 specimens agree sufficiently well and until male specimens 

 are found the insects cannot be further separated. 



Abdomen blackish, the segments narrowly margined 

 caudally and laterally with pale yellowish white, more 

 distinctly on the tergites ; genital segment of the female 

 orange-yellow; ovipositor with the valves horn-coloured, 

 acute. Male hypopygium with the pleurites moderately 

 slender, bearing two pleural appendages of very unequal 

 length ; outer appendage unarmed, long and slender, of 

 nearly uniform width beyond the base, the apex obtuse, the 

 basal third pale, the apex blackened ; inner pleural appen- 

 dage small, suboval, the apex with numerous setigerous 

 tubercles. Gonapophyses long and slender, tapering gradu- 

 ally to the acute blackened tips ; just before the apex with 

 a broad setigerous area. Penis-guard pale, broad basally, 

 narrowed to the decurved tip. 



Hab. Transvaal to British East Africa. 



Hulotype, <$ , "Lot 30, De Kaap Block B," near Kaap- 

 muiden, Eastern Transvaal, October 11, 1919 (H. K. Munro). 



Allotype, ? , Parklands at Nairobi, British East Africa, 

 April 26, 1911 (/. G. Anderson). Presented by the Entomo- 

 logical Research Committee, 1913. 394. 



Paratopotype, a broken $ , October 10, 1919; paratype, 



? , Camp, Upper Shire, INyasaland, September 28, 1911 



{Dr. J. B. Davey) ; in dining hut, at night. Paratype 



presented by the Imperial Bureau of Entomology, 1915. 58. 



Type in the collection of the writer; allotype in the 

 collection of the British Museum (Natural History). 



Gonomyia [Gonomyia) sobrina, sp. n. 



General coloration dark brown ; thoracic pleura dark 

 brown with a narrow, whitish, longitudinal stripe ; coxae and 

 trochanters light yellow ; wings pale greyish ; sparsely 

 spotted with brown, the costa variegated with brown and 



