142 Annals of the South African Museum. 



Smith gives a rather clumsy illustration of this species in Cat. 

 Hymen. Brit. Mus., vol. 7, plate 2, fig. 15a, which is of very little 

 assistance in completing Westwood's very insufficient description. 

 As far as one may judge by the description and the figure referred to, 

 this insect bears a great resemblance to the species described below 

 as tuberculatus, n. sp. I am inclined to suspect that the pale coloura- 

 tion of the nervures and stigma is due to immaturity. 



J 



A. TUBERCULATUS, n. SD. 



V . L 



$ . 9 mm. Allied to buttgenbachi, Forel. Dark ochreous ; pro- 



notum except the margins, mesonotum except the portion border- 

 ing the median and lateral sulci, scutellum except the extreme 

 posterior portion, dark brown ; epinotum, petiole and abdominal 

 segments above, especially the first two, -slightly browned; man- 

 dibles and antennae ochreous ; head black. Scape, basal segments 

 of flagellum, mandibles, front of the head, and the legs, with long 

 pale pilose hairs, which are shortest on the head ; the rest of the body 

 without pilosity, but covered with a close adpressed and yellowish 

 pubescence. Head behind the eyes very smooth, shining and 

 impunctate, the rest of the body closely punctured with small 

 shallow punctures ; legs shining and sparsely punctured. Head 

 two and a quarter times wider than long ; seen from above, it 

 has the shape of a reversed triangle, with the eyes on each side 

 of the base (which is straight), and the apex {i.e. the occipital region) 

 broadly rounded. Front of the head below the eyes shallowly 

 concave. The post-orbital dorsal surface is feebly convex, almost 

 flat. The eyes are hemispherical, not large, less than half the 

 length of the sides of the head. The ocelli are not raised, placed 

 forwards just above the vertical face of the head ; the distance 

 between the anterior ocellus and the line joining the posterior ocelli, 

 less than its own diameter. Mandibles very long, as long as the 

 distance between the inner margins of the eyes, narrowing towards 

 the apex, which is acute ; a slight angle, hardly large enough to 

 be called a tooth, separates the basal from the inner and concave 

 margin. Scape half as long as the mandibles, two and a half times 

 longer than its apical width ; flagellum thinning towards its apex, 

 nearly four times longer than the scape, all the joints longer than 

 wide. Pronotum very slightly exposed ; mesonotum rounded in 

 front, somewhat flattened behind and above, in the middle, the 

 parapsidal sutures and a median longitudinal sulcus well defined. 

 The scutellum is very round posteriorly. Seen from the side, the 

 face of the epinotum is vertical, slightly concave below. 



