118 Annals of the South African Museum. 



end of the tibia. Claws long ; pulvilli well developed. Wings short 

 and narrow, without basal comb, and with the membrane strongly 

 folded (whence the name Pteraula.K). Base narrow, the alula less 

 developed, but distinct and rounded ; praefurca short. Second and 

 third vein at an acute angle ; second vein looped at end, but not 

 retreating ; cubital fork broad, retreating at the base of the upper 

 branch and united with an appendage to the second vein. Therefore 

 there are 3 submargiual cells, the base of the upper branch of the 

 cubital fork in the shape of a short cross-vein between the appendix 

 and the rest, which are on the same line. First posterior cell closed 

 before the border, acute at end, and provided with a rather long stalk ; 

 discoidal cell obtuse at end, less than twice as long as the second 

 posterior cell, the discal cross-vein placed a little before its middle ; 

 2nd, 3rd and 4th posterior cells of equal breadth at end ; anal cell 

 long, with parallel sides, narrowed at end but open. Ambient vein 

 complete ; axillary lobe well developed. 



In the allied Cononeclys stenura, Loew, there are no pulvilli ; but in 

 C. erytliraspis they are present, and Prof. Hermann has proposed for it 

 a new genus, Conugasttr a name which cannot be maintained, because 

 it is preoccupied in the Diptera by Brauer and Bergeustanim, 1892. 



Type : The following new species. 







PTEKAULAX FLEXICORNIS, sp. nov., , $ . 



An ApJioebantus-]ilz.e species of middle size, very distinct owing to 

 its singular venation and by the shining black hind part of the 

 scutellum. 



Type ^ and type $ ; a single couple of specimens from Bush- 

 manlaud, Een Eiet (Cape), October, 1911 (E. M. Lightfoot). 1 

 have seen in the Museum of Budapest a second species from Willow- 

 more, in which the scutellum is not shining black behind and the 

 abdomen is more setose. 



Length of the body 10 mm. ; of a wing 7 mm. Entirely black, 

 grey-dusted, and white and yellowish tomeiitum. Occiput dark grey- 

 dusted above and paler grey below, with short greyish pubescence 

 and white scales on the sides near the eye's indentation. Ocellar 

 tubercle black, grey or brownish-haired. Frons of the male grey- 

 el usted and entirely clothed with whitish hairs, like the face; frons of 

 female shining black, with brownish hairs, with whitish ones like 

 those of the face in front only. Antennae black ; first joint with 

 whitish hairs. Proboscis black ; palpi yellow. Thorax black ; on the 

 back it is dark grey-dusted, with three distinct but narrow longitudinal 



