482 An-Hdl* <>f the South Afrn-un Museum. 



frontal black band, narrower behind ( $ ) or of equal width ( 9 ) 

 Thorax ashy with a wash of flavescent and with the four usual black 

 bands ; scutellum dark, testaceous on its free border. Abdomen 

 black, the three last segments with an ashy pruinose band not clearly 

 defined and intersected by a narrow black line. The wings are some- 

 what greyish in the <? , moderately clear in the 9 ; the cubitus of the 

 fourth nervure is at right angle; the apical transverse arched above the 

 cubitus, then straight ; the posterior transverse oblique, little flexed, 

 moderately removed from the cubitus; two or three ciliae at the base 

 of the third nervure above and under; no costal spine. Squamae 

 white with a tinge of yellow ; halteres dark, testaceous at base. Legs 

 black, with the tibiae sometimes brownish red. Fore claws of $ 

 moderately elongated. 



Chaetotaxy : 2 ascending frontal setae (sometimes 3 in the $ ) ; 

 3 spaced setae going beyond the insertion of the antennae, the last one 

 situated below the antennal chaeta ; 2 long ocellary setae turned 

 forwards ; 1 long and robust inner vertical seta turned backwards, 

 1 external vertical turning outwards, short and weak in the J , more 

 developed in the $ . Thorax with 4 dorso-central setae and 2+1 

 sternopleural. Scutellum with 3 long marginal and a pair of apical, 

 crossed setae, the setae developed, not erect. Abdomen : segments 1 

 and 2 with 2 median marginal setae, segment 3 with a row of 8 ; all 

 these setae erect. ISTo discal setae ; segment 4 bristling with short 

 setae in its terminal half or more. Higher occiput without small 

 black setae at the back of the ciliae ; 3-4 small reclining setae above 

 the great vibrissae, which are long and robust. The hind tibiae are 

 somewhat regularly ciliate with a small median seta. Length 

 8-10 mm. 



In addition to examples from Southern Nigeria, I have received 2 

 typical 9 9 from Nyassaland, Mlange, collected the one by H. Brown, 

 the other by S. A. Neave. 



The South African examples differ a little from those above cited by 

 the slightly wider frons, the frontal setae, 2, seldom 3, of which impinge 

 on the genae, but in any case they are not spaced, and consequently do 

 not reach beyond the antennal chaeta. The hind transverse of the wing 

 is more sinuose ; the base of the third nervure often bears 5 ciliae. 

 The examples are all $ <j? > some, hatched, are greyish with the 

 squamae whitish, but in all the antennae are normal. 



Sensu stricto, this species, owing to its sternopleural setae, is an 

 Exorista ; nevertheless, I include it in the genus Carcelia on account of 

 its other affinities. It inhabits the same region as Carcelia evolans 

 Wied., which it greatly resembles. C. angulicornis is elongated and 



