T11K ANNALS 



MAGAZINE OF NATURAL 1113T0BY. 



[SEVENTH SERIES. J 

 No. 32. AUGUST 1900. 



XVI. — Notes on Diptera from South Africa (Tabanidae and 

 Asilidae). I > v ^liss Gertrude Rigardo. 



The Diptera treated of in this [taper are those collected by 

 Mr. Distant, chiefly from the Transvaal, but a few come from 

 Angola and Nyasaland. The new species will be figured 

 later in his work on the insect fauna of the Transvaal. The 

 other families represented in his collection will be described on 

 a future occasion. 



Tabanidae. 



Pakgoninm. 



Cadicera nigrescens } $ , sp. n. 



One female from Zomba, British Central Africa {Rendalt). 



This species, rather resembling C. rubra-marginata, Alacq., 

 differs from it in the following particulars : — The antennae are 

 imperfect in this specimen. The red colouring on the abdo- 

 men is not so widespread, there is no central dorsal red stripe 

 on the first three segments, the red at the sides is less marked 

 and does not begin till the third segment, on the ventral side 

 it extends as a band on the last segment. There is a greyish 

 band on the forehead behind the antennas, extending to the 

 sides, plainly visible when viewed from behind. The palpi 



Ann. & Mag. N. Hist. Ser. 7. Vol. vi. 11 



