A Monograph of the Formicidae of South Africa. 307 



with a median carina, and a lateral one on each side. Scape not 

 reaching the posterior margin, somewhat curved near the base, 

 2nd-8th joints of the flagellum wider than long, 2nd-5th twice as wide 

 as long. Mandibles very finely striate, dull, armed with 7 teeth, the 

 posterior four small. Pro-mesonotal suture obsolete, meso-epinotal 

 suture indistinct above. Shoulders of the pronotum angular. Dorsum 

 of the thorax marginate in front and at the sides, the margin uneven, 

 being formed by the outermost rugae. The rugae of the head, 

 thorax, and 1st node are brownish, darker than the ground colour. 

 Thorax narrowed at the meso-epinotal suture, widening immediately 

 behind the same at the base of the epinotum and thence narrowed 

 again towards the spines. Seen in profile, the dorsum of the thorax 

 is fairly straight except in front, where the pronotum joins the rneso- 

 notum in an obtuse and indistinct angle. The dorsum of the epinotum 

 is a little longer than wide ; the declivity is vertical and striate on its 

 upper half. The epinotal spines are acute, moderately divergent, 

 directed obliquely upwards, longer than the interval between their 

 bases and longer than their basal width. Episternal teeth acute, less 

 than half as long as the epinotal. Peduncle of the 1st segment 

 of the petiole shorter than the node ; the latter, seen from above, 

 hexagonal, the anterior lateral sides longest, wider behind than in 

 front, the dorsal surface moderately convex ; seen from the side, the 

 anterior face is shorter than the posterior ; the ventral lamella is 

 produced into a minute tooth at the base of the peduncle. Second 

 node transversely ovate or subglobose, one-quarter wider than long, 

 and wider than the 1st node. Abdomen oval. Femora moderately 

 swollen. 



Var. erecttjm, Emery. 



Ann. Soc. Ent. France, vol. 63, p. 37, £ , 1895. 



" Differs from the type by being more robust and a little larger. 

 The petiole is a little thicker, the nodes rounder. The epinotal spines 

 fairly short but nearly erect, their posterior margin, in profile, being 

 the continuation of the declivity, and nearly perpendicular to the 

 dorsum of the thorax. The base of the 1st abdominal segment is 

 more distinctly striate than in the type. Vrijburg, Bechuanaland. 

 (Simon)." 



Var. phasias, Forel. 

 Bull. Soc. Vaud. Sc. Nat., vol. 50, p. 226, £ , 1914. ' 

 $ . 3*6 mm. Yellow, the abdomen and nodes, clypeus and 

 antennae more reddish-yellow. The sculpture is a little more 



