198 AniKth of the 8o'/iflt African Museum. 



Holotype, $, Krauzkop, Natal, November, 1917 (K. H. Barnard). 

 Type in the South African Museum. 



GONOMYIA (GONOMYIA) MIMETICA, sp. n. 



Eelated to G. siibcinerea (O.S.) of the Eastern United States ; general 

 coloration grey, the thoracic pleura yellowish, the sternum brownish. 



Male. Length about 4'5 mm. ; wing 5'2 mm. 



Rostrum and palpi black. Antennae black, the terminal flagellar 

 segments elongated. Head dark, greyish pruinose. 



Thoracic dorsum grey, the praescutal stripes ill-defined. Pleura 

 yellow, the mesosterna brownish. Halteres long, pale, the knobs a 

 little darker. Legs with the coxae and trochauters dull yellow ; 

 remainder of the legs pale brown, the tarsi darker. Wings greyish 

 subhyaline ; stigma distinct but rather pale ; veins dark brown. 

 Venation (Plate III, fig. 14) : Sc ending just beyond the origin of the 

 sector; Its long, oblique, a little sinuous before mid-length; -R 2 + 3 

 arcuated; deflection of -R 4 + . 3 punctiform ; cell 1st M., closed; basal 

 deflection of Cu\ at the fork of M. 



Abdomen dark brown, more yellowish laterally ; hypopygium 

 yellow. Male hypopygium with the pleurites moderately elongated, 

 the dorsal angle produced caudad into a rather stout pale lobe that 

 bears a few scattered hairs ; ventral pleural appendage a long, slender, 

 pale lobe that is covered with pale hairs ; dorsal pleural appendage 

 stout, subcircular, the distal end produced into a short, blunt tubercle 

 that bears a few hairs ; the caudal margin is chitinised and produced 

 into a powerful curved hook that bends dorsad and finally slightly 

 cephalad (Plate IV, fig. 23). Penis-guard elongate, compressed, deeply 

 notched beyond mid-length, exceeding the tips of the pleurites ; from 

 near its base projects an elongate, slender, heavily chitiuised rod that 

 is acutely pointed at its tip. 



Habitat. South Africa. 



Holotype, $ , Kranzkop, Natal, November, 1917 (K. H. Barnard). 



Paratype, J, New Hanover, Natal, November 29th, 1914(0. B. 

 Hardeuberg) ; Montagu, Cape Colony, October, 1919 (R. W. Tucker). 



Type in the South African Museum. 



GONOMYIA (GONOMYIA) TUCKEEI, sp. n. 



Colour brownish -grey, the praescutal stripes rather indistinct ; 

 antennae black ; legs dark brown ; wings with a faint yellowish tinge ; 

 Sc long, extending to opposite mid-length of Bs ; cell ~Lst M z open by 

 the atrophy of the outer deflection of M. t ; basal deflection of Cu-^ far 

 before the fork of M. 



