46 Annals of the South African Museum. 



narrowed from the outer to the inner side; the obHque depression 

 bears some stout keels ; the second and third segments are blackish 

 in the middle. 



* Iphiaulax mediator, sp. nov. 



Length 7 mm. ; terebra 2 mm. 

 Transvaal. 



This species is identical in colouration with the foregoing ; the two 

 may be (apart from the great difference in size) separated thus : — 



Ovipositor longer than the abdomen ; the keel on second 

 abdominal segment not clearly separated ; recurrent nervure 



not interstitial meridionalis. 



Ovipositor not half the length of the abdomen, the area on 

 second abdominal segment distinct, longish, formed of three 

 stout striae, the recurrent nervure interstitial meiUator. 



The sides of the petiole at the apex, the second segment and the 

 base of the third, including the suturiform articulation, are black ; 

 the basal two-thirds of the stigma are pale orange, face thickly 

 covered with long black hair ; there are two irregular orange spots 

 on the lower part of the outer orbits. Face opaque, shagreened. 

 Hair on black palpi pale. 



The Group of I. coccineomdcnlatus, Cam. 



This group differs from the pictiii section in having the abdomen longer and 

 narrower, clearly longer than the head and thorax united and not much wider 

 than the latter ; and the head and body, instead of being red, slightly spotted 

 with black, is black spotted with vermillion. Only the basal two segments of 

 the abdomen are striated, the part beyond the suturiform articulation being 

 smooth ; the furrows are crenulated, but not strongly. Wings smoky, with 

 vermilion costa and stigma. 



Iphiaulax coccineomaculatus, sp. nov. 

 Black, the oral region, a short line on the inner orbits, opposite 

 the antennae, a short, narrower one on the outer side of the malar 

 space along the eyes, pronotum and propleurae, the apex of the 

 middle lobe of the mesonotum, tegulse, scutellums, the space at their 

 sides, a narrow line on the base of the metanotum, the base of meso- 

 pleurae, its lower part irregularly to beyond the middle, the greater 

 part of the first and the sides of the others irregularly, scarlet-red ; 

 legs scarlet-red ; the hind tarsi fuscous. Wings smoky fuscous, 

 darker towards the apex; the costal cellule, the first cubital cellule 

 for the greater part and a small cloud below its apex, hyaline, 



