224 Annals of the South African Museum. 



prolongation of the head backwards to the hypopygium ; wings sub- 

 hyaline ; Es short, straight, second anal vein short ; male hypopygium 

 simple, the pleural appendages armed with sharp chitinised spines. 



Male. Length about 7 mm. ; wing, 8 mm. 



Frontal prolongation of the head brownish-yellow laterally, clear 

 silvery cinereous above, moderately elongated ; iiasus distinct ; palpi 

 elongate, brown. Antennae with the scapal segments dark brown, the 

 first heavily grey pruinose ; flagellar segments uniformly yellowish- 

 brown. Head with the occiput and sides of the vertex rich brown, the 

 middle portion of the vertex and front clear ashy, this area narrowed 

 to a point behind. Eyes large, the ommatidia delicate. 



Pronotum yellowish -brown on the sides, clear ashy medially. 

 Mesonotal praescutum yellowish-brown laterally, more golden-yellow 

 medially, a narrow ashy line down the extreme median portion ; scutal 

 lobes largely golden -yellow 7 , the median area ashy ; scutellum and 

 postuotum yellowish-brown laterally, ashy medially. Pleura yellow, 

 sparsely grey pruinose. Halteres short, pale brownish-yellow. Legs 

 with the coxae and trochanters yellow, the remainder more brownish- 

 yellow. Wings of the somewhat teneral type almost clear ; when 

 fully coloured probably uniformly suffused with darker. Venation 

 (Plate IV, fig. 18) : Sc ends about opposite mid-length of the sector ; 

 Rs short and almost straight ; basal deflection of MI + Z long, exceeding 

 in in length ; m-cu present, short ; second anal vein very short. 



Abdomen with a broad, ashy dorso-mediau stripe that is interrupted 

 at the sutures ; lateral margins of the tergites dark brown ; steruites 

 and hypopygium yellow. Male hypopygium very small and simple in 

 structure. Ninth tergite moderate in size, the posterior margin with a 

 broad V-shaped notch, the lateral lobes formed with their margins 

 venly rounded. Outer pleural appendage sub-oval, flattened, pale, 

 with numerous pale hairs, lying closely appressed to the second or 

 inner appendage ; this latter is large, flattened, pale, the outer margin 

 set with about six acute blackened spines, of which four lie posteriorly 

 and two more cephalad ; the extreme tip of the appendage is produced 

 into a flattened blade that juts into the tergal notch. Ninth sternite 

 deeply incised on the mid-ventral line. Eighth steruite unarmed. 



Habitat. South Africa. 



Holotype, <^,Eshowe, Natal, December, 1916 (Bell-Marley). 



Type in the South African Museum. 



TlPULA FRATER, Sp. 11. 



Antennae short, yellow 7 ; general coloration yellow, the praescutum 

 with four greyish-brown stripes that are margined with dark brown ; 



