484 Annal* of the South African 



slender, pointing forwards ; 1 pair of long, vertical, crossed, inner 

 setae ; no external vertical setae. Antennae black, moderately broad ; 

 joint 3 about 3 J times as long as joint 2 ; chaeta black, long, attenuate 

 at apex, thickened in its first third. Palpi black. Upper occiput with 

 whitish villose hairs and without small black setae at the back of the 

 ciliae. Thorax with 4 obscure bands, the median shortened, the lateral 

 interrupted, 4 dorso-central setae. Scutellum rufescent, dark at base ; 

 the crossed apical setae as well developed as the marginal. Abdomen : 

 segments 1 and 2 with 2 median marginal setae, segment 3 with a 

 complete row of 8-10 setae. No discal setae. Hypopygium hidden. 

 Wings hyaline ; cubitus of nervure 4 straight or sub-acute ; apical 

 transverse arched after the cubitus, then straight, long in the $ , less 

 so in the 9 ; posterior transverse more or less sinuose, distant from the 

 cubitus. No costal spine, 3-4 ciliae at the base of the 3rd nervure. 

 Squamae whitish ; halteres obscure, testaceous towards the base. 

 Legs black ; hind tibiae with the setae unequal and distant ; claws of 

 $ very long. 

 Length 10-12 mm. 



Several examples from Natal, Durban (H. W. Marley) ; S. Afric. 

 Museum; Uganda (C. H. Marshall); Sierra Leone (J. J. Simpson) ; 

 Southern Nigeria (J. J. Simpson), Entom. Ees. Comm. ; Belgian 

 Congo (my collection) ; 1 $ from Madagascar. The examples from 

 Uganda are dark grey with the scutellum non-rufous, of the same 

 colour as the thorax ; among those from Southern Nigeria is a 2 

 with a lilac sheen on the head. Of the Congo examples, 1 $ has a 

 slightly yellowish head, and the villosity of the occiput is flavescent. 



GEN. CATAGONIA Br. & Berg. 



& 



CATAGONIA SUBDISTINCTA, u. sp. 



Differs from the palaearctic C. aberrans Bond, by the frontal setae 

 descending on the genae to the number of 3 or 4 as far as the autennal 

 chaeta or further underneath ; no ciliae at the terminal. In G. aberrans 

 there are two setae only on the genae, not projecting beyond the level 

 of the lower end of the 2nd antennal joint, and also fine ciliae below 

 these setae. Moreover in C. subdistincta the frontal band is less broad 

 and the scutellum more rufous on its free border. The other characters 

 of the two species are identical. 



Two $ l from Natal, Durban (H. W. Bell-Marley), S. Afric. 

 Museum. 



