Hymennptera. 167 



a cloud in the centre of the pobrachial cellnle, the apex of the 

 hind wings, their apical mai-gin nai-i'owly, a bi^oad irregular cloud 

 in the middle, not reaching to the base and a shorter, narrower one 

 between it and the base on the apical half of the wings, fuscous ; 

 the nervure and stigma yellow on the uncoloured parts of the 

 wings. Female. 



Length 13 ; terebra 13 mm. 



Grahamstown. November : Dr. H. Becker. 



Abdomen smooth and shining ; the keel on base of 2nd 

 segpient, not clearly separated, broad at the base, becoming gradu- 

 ally narrowed to the apex, reaching to the middle of the segment ; 

 its sides with a deep curved furrow reaching near to the apex; the 

 3rd segment with a shallow oblique furrow on the sides at the 

 base. 



Exothecus ccqjensis, sp. nov. 



Length 15 mm. Male. 



Hab. Knysna. April : R, M. Lightfoot. 



This species is identical in colouration with E. tibialis ; it 

 may be easily known by the structure of the abdomen ; the raised 

 part of the 1st abdominal segment becomes distinctly narrowed 

 towards the base and there is a narrow furrow down the centre 

 near the apex ; the dilated part of the keel on the 2nd segment 

 does not reach to the middle ; there is a similar keel on the 3rd, a 

 less distinct one on the 4th, and a furrow on the basal half of the 

 5th; the space bordering all the keels is depressed. The lateral 

 furrows on the 2nd segment is wide and reaches near to the apex ; 

 there are oblique furrows on the sides of the 3rd, 4th and 5th 

 segments at the base ; the furrows become gradually shorter ; that 

 on the 3rd reaching to the middle of the segment. Apex of 

 clypeus obliquely depressed. Temples roundly obliquely nar- 

 rowed, as long as the antennal scape. The transverse median 

 nervure is received nearer the transverse basal than it is in 

 E. tibialis. 



Exothecus canaliculatus, sp, nov. 



Length 18-21 mm. Male and Female. 



Brak Kloof. January : Mrs. G. White. 



This species is similar in the colouration of the body, antennas 



