in the British Museum. 35 



r on R 2 a little less than its own length beyond the fork of 

 /t* 2 +3 ; basal deflection of Cu x inserted a short distance before 

 mid-length of the small, nearly pentagonal, cell 1*/ M 2 . 



Abdomen metallic greenish blue. Valves of the ovipositor 

 black, a little paler at the extreme tips. 



Hab. Nyasaland. 



Holoiype, ? , Mt. Mlanje, December 28, 1912 (S. A. Neave). 



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



Type in the collection of the British Museum (Natural 

 History). 



Gnophomyiajjerelegans is very closely allied to G.peramcena, 

 despite the striking differences in the coloration of the b xly 

 and legs. In both species the hind legs are conspicuously 

 longer than the others and the femora are slightly incrassated. 



Genus Gonomyia, Meigen. 

 Gonomyia (Gonomyia) nyasa, sp. n. 



Antennae black, the scapal segments paler; mesonotum 

 pale brown, the scutellum broadly margined with white; 

 pleura striped longitudinally brown and white ; halteres 

 yellow, the base of the knobs brown; legs pale brown; 

 wings faintly greyish, stigma indistinct ; cell R 2 very small, 

 basal deflection of Cu x before the fork of M; abdominal 

 tergites uniformly dark brown; male hypopygium with both 

 pleural appendages simple. 



Male. — Length 3*4 mm.; wing 3*6 mm. 



Rostrum dark brown ; palpi black. Antennae with the 

 enlarged scapal segments pale yellowish brown ; fiagellum 

 black with exceedingly elongate verticils. Head badly 

 wrinkled in the unique type, pale brownish yellow, the 

 vertex indistinctly darker medially. 



Mesonotal paescutum pale brown, the extreme lateral 

 mar-gins yellowish white; scutum similar; scuttdlum pale 

 brown, the caudal margins broadly white ; postnotum (lark 

 brown, the sides more yellowish. Pleura dark brown, longi- 

 tudinally striped with whitish, the dorsal stripe formed bv 

 the lateral margins of the mesonotal praescutuni as described 

 above, the ventral stripe lying across the base of the meso- 

 sternum. Halteres pale yellow, the knobs brown with only 

 the tips yellow. Legs with the coxae and trochanters pale 

 brown ; remainder of the legs pale brown, the distal tarsal 

 segments dark brown ; a few stiff setae at the tips of the 

 femora. Wings with a faint grey tinge ; stigma indistinct ; 

 veins pale brown. Venation: Sc short, Sc x ending a shoit 

 distance before the origin of lis ; vein R 2+3 inalignmeut with 

 Us and much longer than it ; cell H 2 very tiny, vein Ji 2 being 



