A Monograph of the Formicidae of South Africa. 743 



where it is most abundant, more or less masks the sculpture. Pilosity 

 greyish yellow, more or less erect, fairly scanty on the thorax, more 

 abundant on the head and abdomen. On the legs and scapes the 

 pilose hairs are coarser, and the pubescence finer. 



Head, thorax and petiole more or less longitudinally rugose, here 

 and there reticulate-rugulose, the spaces between the rugae coriaceous. 

 Abdomen closely and finely reticulate-punctate. Legs and scapes 

 very finely reticulate-punctate or merely reticulate. Head, including 

 the closed mandibles, oval, two-fifths longer than wide, hardly wider 

 behind than in front, very convex above. Clypeus convex trans- 

 versely, slightly depressed behind the anterior margin which is 

 convex and entire. Frontal carinae raised, feebly sinuate, fairly 

 closed together. Eyes very convex, (the degree of convexity is 

 variable), placed at the posterior third of the sides. The scapes 

 incrassate apically, extending beyond the hind margin by half their 

 length and reaching the pro-mesonotal suture. Mandibles elongate 

 triangular, strongly sulcate and punctate in between the sulci. 

 5-dentate. Pronotum narrowed anteriorly from about the anterior 

 third and armed at that point on each side with a long and acute 

 spine lamelliform in its basal half, divergent and directed forwards 

 and slightly outwards, two and a half times longer than its basal width 

 and as long, or nearly as long, as the portion of the pronotum behind it ; 

 the posterior two-thirds of the pronotum parallel-sided. The sides 

 of the dorsum of the thorax, from the pronotal spines as far as the 

 epinotal teeth, are sharply marginate, the margins projecting a little 

 beyond the vertical sides, and over the base of the mesonotum reflected 

 a little upwards. Both thoracic sutures sharply defined. Mesonotum 

 a little wider in front than behind, twice as wide as long, the anterior 

 margin feebly arcuate, the posterior margin straight. Dorsum of 

 epinotum convex lengthwise and sloping downwards behind, one-fifth 

 longer than wide, parallel-sided, ending on each side behind in a 

 rounded and upturned triangular tooth. Declivity of epinotum 

 concave from above to below, oblique, half as long as the dorsum. 

 The dorsal profile of the thorax forms a fairly high and continuous 

 convexity. Scale of petiole seen from the side more or less conical, 

 seen from above, with an anterior and a posterior face, the anterior 

 face trapezoidal, widest above and fairly flat transversely, the posterior 

 face convex, the dorsal edge thick and rounded from front to back, 

 ending on each side in a long and acute spine which is as long as or 

 longer than the anterior face of the scale, curved, divergent and 

 directed upwards. Just below and outside these inner spines there 



