80 Annals of the Soiith African Museum. 



Femora black, with yellow tip, and provided below, like the coxae, 

 with numerous white hairs; tibiae and tarsi entirely yellow to the end, 

 the hind tibiae with a few white hairs ; claws yellow, with black tip ; 

 pulvilli yellowish. Wings whitish hyaline, with yellow veins, distinctly 

 more elongated than usually ; the venation is typical, but the anal 

 cell is narrowly open at the hind border. 



CALLYNTHROPHORA, Schiner (1867). 



I refer to this genus a new species, which is diffei'ent from the 

 typical ones in having only 2 submarginal cells. But I think that 

 the essential character of the genus, as believed by its author, is not 

 to be found in the number of the submarginal cells, which may be 

 3 even in a true Corsomyza like C. anceps ; we have here a case 

 analogous to that of Triplasius vittatus and Bombylitis lateralis, which 

 are evidently congeneric notwithstanding the difference in the number 

 of submarginal cells. From Schiuer's description it is evident that 

 the principal distinction is to be found in the shape of the head and 

 antennae. The frons is in both sexes much broader than in Corsomyza. 

 Besides the antennae being inserted in a much lower position, the 

 frous appears to be much longer than the face, and is inflated above 

 the antennae, being consequently much broader. From this fact is 

 derived the other that is, the antennae ai~e inserted exactly in the 

 centre of the facial circular brush, and not on its upper border as in 

 Corsomyza. The frons declines gradually to the face, because a part 

 of this last is becoming part of the first, as a result of the lower 

 insertion of the antennae ; therefore in the female the facial brush is 

 not so well formed as in the male. The first joint of the antennae is 

 shorter than in Corsomyza, and distinctly swollen, being nearly of a 

 spheroidal shape ; the third joint is strongly clavate. All the other 

 characters, as well as the general facies, are as in Corsomyza. I have 

 not seen the typical species, but only the following new one : 



CALLYNTHROPHORA MARGINIFRONS, sp. nov., c? ? 



A small species, distinguished from the typical one by the yellow 

 colour of the face and of the fore-part of the frons and of the basal 

 joints of the antennae, and the presence of only two submarginal cells 

 in the wings. 



Type ^ and type $, a single couple of specimens from Nama- 

 qualand, Port Nolloth (Cape), August (R. M. Lightfoot). 



Length of the body 6-6'5 mm. ; of a wing 5-5'5 mm. Body 

 perfectly conical, the head being broader than the thorax and the 



