Descriptions of Nctv Species of Parasitic Hyvicnoptcra. 129 



Face closely and strongly punctured ; its centre is raised broadly ; 

 on the top is a short, wide furrow. Clypeus more sparsely and 

 deeply punctured above, the apex smooth ; the lateral foveas are large 

 and deep. Occiput, except round the edges, pale yellow. In the 

 centre of the base of the metanotum is a deep depression, longer 

 than wide and rounded at the apex ; beyond it the centre is 

 depressed ; the apical slope is depressed ; on it are three stout, 

 curved, irregular keels ; the outer edges are irregulai'ly reticulated. 

 The hinder edge of the apex of the costa and of the base of the 

 stigma are luteous ; below the base of the stigma is a cloud, which 

 extends, on the outer side, obliquely to the disco-cubital nervure, the 

 inner side is bilobate, the front lobe being the larger and rounder 

 there is a smaller, elongated cloud in the centre of the base of the 

 third discoidal cellule, and a still smaller square one at the base of the 

 first apical cellule at the discoidal nervure. 



Ctenotoma nigriceps, sp. nov. 



Eufous, the antennae, front and vertex black ; the lobes of the 

 mesonotum infuscated ; the face, clypeus and mandibles yellowish 

 testaceous ; the wings fuscous, tinged with violaceous ; there is a 

 hyaline — slightly tinged with yellow — cloud, extending from the apex 

 of the costa to the opposite side of the wings ; its inner edge is 

 irregular ; its outer is dilated along the disco-cubital nervure. Apex 

 of hind tibiae broadly, and hind tarsi black. $ . 



Length 22 mm. ; terebra 3 mm. 



Natal. Durban. " Bred in Cape Town." 



Head and thorax densely covered with a short, fulvous pile ; smooth 

 and shining. On the centre of the base of the metanotum is a 

 depression which is wider than long, its sides obliquely sloped from 

 above to the bottom ; the outer border raised into a bluntly, rounded 

 tubercle ; the apical slope, except broadly in the middle below, is 

 stoutly, irregularly reticulated. Pleurae smooth, shining, more 

 densely pubescent than the mesonotum. 



Probably the amount of black on the mesonotum and on the hind 

 tibiae varies. The $ has the ventral segments of the abdomen more 

 largely splashed with dirty, lead-coloured white than the ? ; 

 probably the amount of this colour varies. 



Ctenotoma euficeps, sp. nov. 



Eufo-testaceous, the antennae, ocellar region and middle of front 

 broadly, the apex of the third and the following abdominal segments 

 entirely, ovipositor, a spot on the apex of the hind femora and the 



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