172 Miss G. Ricardo on 



i lints with tliick black pubescence. Forehead black, with 

 ilack bristles and hairs. Thorax covered with short dense 

 yellow hairs. Breast-sides have some grey tomentum and 

 black pubescence. Scutellum and abdomen have similar 

 pubescence to that of the thorax ; genital organ black, 

 shining, with black pubescence. Underside ot' abdomen 

 black, with yellow hairs. Legs black; the anterior and 

 middle coxffi covered with grey tomentum; the pubescence on 

 the legs consists of long light yellowish hairs, except on the 

 apex of tibiae and first j'^int of tarsi, which are clothed under- 

 neath with dense fulvous pubescence, and the last four joints 

 of all the tarsi, which have black pubescence; hind tibias 

 niucli tiiickened, red at the extreme base, no bristles on the 

 underside. Halteres yellow. Wings dark brown, clear on 

 the basal halt, veins dark brown. 



Length 13 millim. 



Type (male), Durban {W. L. J).). 



B(plutoniera nolilis, Lot w. Dipt. SiidiitVik. p. 120 (l';60). 



Two males and two females from Fort Johnston, Nyaaa- 

 land (P. Kendall) ; one male from Lydenburg District 

 [Zutrzenhd). 



Laxenecera zonata, Loew, Dipt. Sudafrik. p. 123 (I860). 

 One female from Pretoria (W. L. 1).). 



Laxemcera albicinta, Loew, Dipt. SiiJafrik. p. 122 (1830). 

 One female from Pretoria ( W. L. D.). 



Dasythrix hrachyptera, Loe-v, Bemerk. iiber. Fam. Asilidon, 

 p. 21 (Berlin, 1853) ; id. Dipt. Siidafrik. p. 126 (18G0). 



D. hrachypfern, ? , Loew, and D. stenura, J* , Loew (Dipt. 

 Sii'lafrik. p. 125), are probably the male and female of one 

 species, as Loew himself suggests, and Gersta:ker, in Decken's 

 Reisen in Ost-Afrik., concurs ; if this is the case^ hrachyptera 

 having priovit}' must be adopted. 



One male from Pretoria {W.L.D.) ; two females from 

 Pretoria (TF.L.X>.). 



These three s|jecimens from the same place seem to con- 

 firm the above supposition, being very similar in general 

 appearance. 



Prcmachus fuhi'pes, Macq., Dipt. Exct. i. (2) p. 93 (1838) ; 

 Loew, Dipt. Sudafrik. p. 132 (IS60). 



Oi.e male from Pretoria (W. L. D.). 



