240 Miss G. TJicavdo on the Asilidao. 



follows : — " Shining black with a close and very lon<if, chieflv 

 black pubescence, the npper lamelise are rather short and 

 stout, and have between them an erect slender organ, which 

 is white-haired at the end ; the under laniellH3 are con- 

 siderably longer and cud in a pair of lung and pointed 

 curved spines/' 



Dysmachus auribarbis, Macq. 



Dipt. Exot. i. (2), p. 242 (1838); Scbiiier, Verb, zool.-bot. Ges. 



Wien, xviii. p. 400, 102 \Lophonotux'] (1867). 

 Dysmachus chalcoy aster, Loew (wee Wied.j, Dipt. Siidafrik. i. p. 152 



[Lophomtm'] (1860). 

 ? iJystiiachus j)hisax,Vf».\k. List Dipt. Brit. Mus. ii. p. 412 \_Lopho- 



notus] (1849). 



In Brit. Mus. Coll. are male and female from Cape 

 Colony, a female from Cape Town, 11. xi. 1914 (A'. H. 

 Barnard), 1914, 15; auotber from Simons Town {P. de la 

 Garde), 96, 2, Oct. 1893. In Cape Coll. a male and female 

 in coitu from Matroosberg, males from Cape Town [Perin- 

 yuez), Simons Town {P. de la Garde), and females from 

 Hex Kiver and Stellenljosch. These specimens vary very 

 much in size from 17-25 mm. 



The moustache is black and white, and the mane black 

 with many outstanding bristles, a few scattered white hairs 

 are discernible posteriorly, but not forming a white stripe. 

 Scutellum with black long bristles on posterior border. 

 Legs bronze-coloured, with tibiae largely reddish brown on 

 upper sides and tarsi chiefly reddish. Specimens measure, 

 S 14-18, ? 15-16 mm. 



This species, originally described by ^lacquart, has been 

 further described bv Schiner in ' Novara Reise,' Dipt. j). 186 

 [Lophonotus'] (1868). 



He distinguishes it from D. chalcoyaster, Wied., by the 

 wholly yellow moustache, by its darker colouring, and, above 

 all, by its genitalia ; the forceps are bifid as in D. chalco- 

 yaster, but the upper arm of fork is very slender and 

 pointed, the under arm thicker and longer, ending in a 

 curved point, with a row of short bristles below, reaching an 

 obtuse tooth, the part from the base to the above-mentioned 

 tooth is considerably longer than in the Wiedemann species. 



He considers Loew erred in making it a synonym of 

 jD. chalcogaster, and suggests Loew's description of a speci- 

 men he calls D. chalcogaster a|)plies to D. auribarbis, 

 Macq.; he suggests Loew^s D. cn/irens. a (^ , is the same as 

 J), chalcogaster. 



