Diptem from South Africa. 1G7 



bordered with grey. The breast-sides shining black, with 

 very faint reddish-grey tomentum. Abdomen blue-black, 

 shining. Halteres brown. Legs dark red, the coxse and last 

 joints of tarsi, the fore femora, and the base of the posterior 

 femora black ; there are no bristles on the fore femora ; all 

 the bristles and pubescence on the legs black. 



Wings light brown, lighter at the apex, the opening of the 

 fourth posterior cell is a little narrowed. 



Length 14 millim. 



Type (female), Barberton (P. Rendall). 



Microstylum dispar, Loew, Dipt. Siidafrik. p. 78 (1860). 

 Four males from Rustenburg, two males from Pretoria. 



Microstylum mgribarbatum, Bigot, Ann. Soc. Ent. Fr. (5) 

 viii. p. 408 (1878). 



One male from Pretoria probably belongs to this species, 

 though the third joint of antennas is reddish, not black, and 

 the hind tibise have white hairs on the underside, extending 

 nearly halfway, of which no mention is made by Bigot. 



Microstylum acutirostre, Loew, Ber. d. Akad. d. Wissench. 

 zu Berlin, p. 658 (1852) ; Dipt. Siidafrik. p. 79(1860) ; 

 Peters's Keise, p. 7, tab. i. figs. 5, 6 (1862). 



One male from Fort Johnston, Nyasaland. 



The third joint of palpi is red on its apical half, not wholly 

 black; the last segment of abdomen has an orange-yellow 

 border ; the double black stripe on the thorax is not wider 

 anteriorly, nor reddish ; and the wings are not so dark as in 

 Loew's description. 



Microstylum rufnevrum, M acq., Dipt. Exot. Suppl. v. p. 49 

 (1850). 



One female from Barberton {Rendall). 



The pubescence on the first joint of tarsi is orange-red 

 instead of white; the wings are hardly brown as in Mac- 

 quart's description^ but greyish. Macquart's type came from 

 Gaboon. 



Microstylum spuria us, Walker, List Dipt. pt. ii. p. '60S 



(1841)). 



Dasypoffon spurinus, Walker, /. c. 

 One female from Pretoria. 



